diff --git a/Import/GacUIReflection.cpp b/Import/GacUIReflection.cpp
index 6c53f251..311ff8e7 100644
--- a/Import/GacUIReflection.cpp
+++ b/Import/GacUIReflection.cpp
@@ -64,7 +64,7 @@ Compiled Workflow Type Resolver (Workflow)
 
 			vint GetMaxPassIndex()override
 			{
-				return 2;
+				return 1;
 			}
 
 			void Initialize(Ptr<GuiResourceItem> resource, GuiResourceInitializeContext& context)override
@@ -74,15 +74,6 @@ Compiled Workflow Type Resolver (Workflow)
 					switch (context.passIndex)
 					{
 					case 0:
-						if (compiled->type == GuiInstanceCompiledWorkflow::Shared)
-						{
-							if (context.usage == GuiResourceUsage::InstanceClass)
-							{
-								compiled->Initialize(true);
-							}
-						}
-						break;
-					case 1:
 						if (compiled->type == GuiInstanceCompiledWorkflow::InstanceClass)
 						{
 							if (context.usage == GuiResourceUsage::InstanceClass)
@@ -114,7 +105,7 @@ Compiled Workflow Type Resolver (Workflow)
 					vint type = (vint)obj->type;
 					writer << type;
 
-					if (obj->type != GuiInstanceCompiledWorkflow::TemporaryClass)
+					if (obj->type == GuiInstanceCompiledWorkflow::InstanceClass)
 					{
 						MemoryStream memoryStream;
 						obj->assembly->Serialize(memoryStream);
@@ -132,7 +123,7 @@ Compiled Workflow Type Resolver (Workflow)
 				
 				auto obj = MakePtr<GuiInstanceCompiledWorkflow>();
 				obj->type = (GuiInstanceCompiledWorkflow::AssemblyType)type;
-				if (obj->type != GuiInstanceCompiledWorkflow::TemporaryClass)
+				if (obj->type == GuiInstanceCompiledWorkflow::InstanceClass)
 				{
 					auto memoryStream = MakePtr<MemoryStream>();
 					reader << (IStream&)*memoryStream.Obj();
diff --git a/Import/GacUIReflection.h b/Import/GacUIReflection.h
index e7c059d8..bf58680e 100644
--- a/Import/GacUIReflection.h
+++ b/Import/GacUIReflection.h
@@ -2110,7 +2110,7 @@ GuiEventInfoImpl
 ***********************************************************************/
 
 			template<typename T>
-			class GuiEventInfoImpl : public EventInfoImpl
+			class GuiEventInfoImpl : public EventInfoImpl, private IEventInfo::ICpp
 			{
 				using GuiGraphicsComposition = presentation::compositions::GuiGraphicsComposition;
 
@@ -2163,10 +2163,18 @@ GuiEventInfoImpl
 					return TypeInfoRetriver<Func<void(GuiGraphicsComposition*, T*)>>::CreateTypeInfo();
 				}
 
+			protected:
+				bool								isCompositionEvent;
+				
+				static WString						attachTemplate;
+				static WString						detachTemplate;
+				static WString						invokeTemplate;
+
 			public:
-				GuiEventInfoImpl(ITypeDescriptor* _ownerTypeDescriptor, const WString& _name, const EventRetriverFunction& _eventRetriver)
+				GuiEventInfoImpl(ITypeDescriptor* _ownerTypeDescriptor, const WString& _name, const EventRetriverFunction& _eventRetriver, bool _isCompositionEvent)
 					:EventInfoImpl(_ownerTypeDescriptor, _name)
 					, eventRetriver(_eventRetriver)
+					, isCompositionEvent(_isCompositionEvent)
 				{
 				}
 
@@ -2176,10 +2184,32 @@ GuiEventInfoImpl
 
 				ICpp* GetCpp()override
 				{
-					return nullptr;
+					return isCompositionEvent ? this : nullptr;
+				}
+
+				const WString& GetAttachTemplate()override
+				{
+					return attachTemplate;
+				}
+
+				const WString& GetDetachTemplate()override
+				{
+					return detachTemplate;
+				}
+
+				const WString& GetInvokeTemplate()override
+				{
+					return invokeTemplate;
 				}
 			};
 
+			template<typename T>
+			WString GuiEventInfoImpl<T>::attachTemplate(L"::vl::__vwsn::EventAttach($This->GetEventReceiver()->$Name, $Handler)", false);
+			template<typename T>
+			WString GuiEventInfoImpl<T>::detachTemplate(L"::vl::__vwsn::EventDetach($This->GetEventReceiver()->$Name, $Handler)", false);
+			template<typename T>
+			WString GuiEventInfoImpl<T>::invokeTemplate(L"::vl::__vwsn::EventInvoke($This->GetEventReceiver()->$Name, $Handler)", false);
+
 			template<typename T>
 			struct GuiEventArgumentTypeRetriver
 			{
@@ -2203,7 +2233,8 @@ Macros
 					L ## #EVENTNAME,\
 					[](DescriptableObject* thisObject, bool addEventHandler){\
 						return &thisObject->SafeAggregationCast<ClassType>()->EVENTNAME;\
-					}\
+					},\
+					false\
 				)\
 			);\
 
@@ -2219,7 +2250,8 @@ Macros
 							return (GuiGraphicsEvent<GuiEventArgumentTypeRetriver<decltype(&GuiGraphicsEventReceiver::EVENTNAME)>::Type>*)0;\
 						}\
 						return &composition->GetEventReceiver()->EVENTNAME;\
-					}\
+					},\
+					true\
 				)\
 			);\
 
diff --git a/Import/Vlpp.h b/Import/Vlpp.h
index 49ac0fba..7b89718c 100644
--- a/Import/Vlpp.h
+++ b/Import/Vlpp.h
@@ -8947,7 +8947,7 @@ ITypeDescriptor (type)
 				List,
 				SortedList,
 				Dictionary,
-				Unknown,
+				NativeCollectionReference,
 			};
 
 			class ITypeInfo : public virtual IDescriptable, public Description<ITypeInfo>
@@ -11832,64 +11832,6 @@ TypeFlagTester
 				static const TypeFlags									Result=sizeof(Inherit(((ValueRetriver<TDerived>*)0)->pointer))==sizeof(void*)?TypeFlags::DictionaryType:TypeFlags::NonGenericType;
 			};
 
-/***********************************************************************
-TypeHintTester
-***********************************************************************/
-
-			template<typename T>
-			struct TypeHintTester
-			{
-				static const TypeInfoHint								Result = TypeInfoHint::Normal;
-			};
-
-			template<typename T>
-			struct TypeHintTester<T*>
-			{
-				static const TypeInfoHint								Result = TypeHintTester<T>::Result;
-			};
-
-			template<typename T>
-			struct TypeHintTester<T&>
-			{
-				static const TypeInfoHint								Result = TypeHintTester<T>::Result;
-			};
-
-			template<typename T>
-			struct TypeHintTester<const T>
-			{
-				static const TypeInfoHint								Result = TypeHintTester<T>::Result;
-			};
-
-			template<typename T>
-			struct TypeHintTester<collections::LazyList<T>>
-			{
-				static const TypeInfoHint								Result = TypeInfoHint::LazyList;
-			};
-
-			template<typename T>
-			struct TypeHintTester<collections::Array<T>>
-			{
-				static const TypeInfoHint								Result = TypeInfoHint::Array;
-			};
-
-			template<typename T>
-			struct TypeHintTester<collections::List<T>>
-			{
-				static const TypeInfoHint								Result = TypeInfoHint::List;
-			};
-
-			template<typename T>
-			struct TypeHintTester<collections::SortedList<T>>
-			{
-				static const TypeInfoHint								Result = TypeInfoHint::SortedList;
-			};
-
-			template<typename K, typename V>
-			struct TypeHintTester<collections::Dictionary<K, V>>
-			{
-				static const TypeInfoHint								Result = TypeInfoHint::Dictionary;
-			};
-
 /***********************************************************************
 TypeFlagSelector
 ***********************************************************************/
@@ -11959,6 +11901,85 @@ TypeFlagSelector
 					>::Result;
 			};
 
+/***********************************************************************
+TypeHintTester
+***********************************************************************/
+
+			template<typename T>
+			struct TypeHintTester
+			{
+				static const TypeInfoHint								Result = TypeInfoHint::Normal;
+			};
+
+			template<TypeFlags Flags>
+			struct TypeHintTesterForReference
+			{
+				static const TypeInfoHint								Result = TypeInfoHint::NativeCollectionReference;
+			};
+
+			template<>
+			struct TypeHintTesterForReference<TypeFlags::NonGenericType>
+			{
+				static const TypeInfoHint								Result = TypeInfoHint::Normal;
+			};
+
+			template<>
+			struct TypeHintTesterForReference<TypeFlags::FunctionType>
+			{
+				static const TypeInfoHint								Result = TypeInfoHint::Normal;
+			};
+
+			template<typename T>
+			struct TypeHintTester<T*>
+			{
+				static const TypeInfoHint								Result = TypeHintTester<T>::Result;
+			};
+
+			template<typename T>
+			struct TypeHintTester<T&>
+			{
+				static const TypeInfoHint								Result = TypeHintTester<T>::Result == TypeInfoHint::Normal
+																					? TypeHintTesterForReference<TypeFlagSelector<T&>::Result>::Result
+																					: TypeHintTester<T>::Result
+																					;
+			};
+
+			template<typename T>
+			struct TypeHintTester<const T>
+			{
+				static const TypeInfoHint								Result = TypeHintTester<T>::Result;
+			};
+
+			template<typename T>
+			struct TypeHintTester<collections::LazyList<T>>
+			{
+				static const TypeInfoHint								Result = TypeInfoHint::LazyList;
+			};
+
+			template<typename T>
+			struct TypeHintTester<collections::Array<T>>
+			{
+				static const TypeInfoHint								Result = TypeInfoHint::Array;
+			};
+
+			template<typename T>
+			struct TypeHintTester<collections::List<T>>
+			{
+				static const TypeInfoHint								Result = TypeInfoHint::List;
+			};
+
+			template<typename T>
+			struct TypeHintTester<collections::SortedList<T>>
+			{
+				static const TypeInfoHint								Result = TypeInfoHint::SortedList;
+			};
+
+			template<typename K, typename V>
+			struct TypeHintTester<collections::Dictionary<K, V>>
+			{
+				static const TypeInfoHint								Result = TypeInfoHint::Dictionary;
+			};
+
 /***********************************************************************
 TypeInfoRetriver
 ***********************************************************************/
@@ -13310,6 +13331,15 @@ namespace vl
 			return InSet<T>(value, reflection::description::GetLazyList<T>(collection));
 		}
 
+		template<typename T, typename U>
+		Ptr<T> UnboxCollection(U& value)
+		{
+			auto boxedValue = reflection::description::BoxParameter<U>(value);
+			Ptr<T> result;
+			reflection::description::UnboxParameter<Ptr<T>>(boxedValue, result);
+			return result;
+		}
+
 		struct CreateList
 		{
 			using IValueList = reflection::description::IValueList;
diff --git a/Import/VlppWorkflowCompiler.cpp b/Import/VlppWorkflowCompiler.cpp
index 47e28f42..8c99216e 100644
--- a/Import/VlppWorkflowCompiler.cpp
+++ b/Import/VlppWorkflowCompiler.cpp
@@ -5533,15 +5533,10 @@ ExpandBindExpression
 				}
 				{
 					// stable symbol order by sorting them by code
-					Dictionary<WString, WfExpression*> orderedObserves;
+					List<WfExpression*> orderedObserves;
 
-					FOREACH_INDEXER(WfExpression*, observe, observeIndex, dependency.dependencies.Keys())
+					auto printExpression = [](WfExpression* observe)
 					{
-						if (!observe)
-						{
-							continue;
-						}
-
 						stream::MemoryStream stream;
 						{
 							stream::StreamWriter writer(stream);
@@ -5550,11 +5545,28 @@ ExpandBindExpression
 						stream.SeekFromBegin(0);
 						{
 							stream::StreamReader reader(stream);
-							orderedObserves.Add(reader.ReadToEnd(), observe);
+							return reader.ReadToEnd();
 						}
-					}
+					};
 
-					FOREACH_INDEXER(WfExpression*, observe, observeIndex, orderedObserves.Values())
+					CopyFrom(
+						orderedObserves,
+						From(dependency.dependencies.Keys())
+							.Where([](WfExpression* expr)
+							{
+								return expr != nullptr;
+							})
+							.OrderBy([&](WfExpression* a, WfExpression* b)
+							{
+								auto codeA = printExpression(a);
+								auto codeB = printExpression(b);
+								auto compare = WString::Compare(codeA, codeB);
+								if (compare) return compare;
+								return a->codeRange.start.index - b->codeRange.start.index;
+							})
+						);
+
+					FOREACH_INDEXER(WfExpression*, observe, observeIndex, orderedObserves)
 					{
 						List<IEventInfo*> events;
 						WfExpression* parent = 0;
@@ -9623,15 +9635,7 @@ CreateTypeInfoFromType
 					{
 						if (scopeName->typeDescriptor)
 						{
-							auto hint = TypeInfoHint::Normal;
-							if (scopeName->typeDescriptor == description::GetTypeDescriptor<IValueReadonlyList>() ||
-								scopeName->typeDescriptor == description::GetTypeDescriptor<IValueList>() || 
-								scopeName->typeDescriptor == description::GetTypeDescriptor<IValueReadonlyDictionary>() || 
-								scopeName->typeDescriptor == description::GetTypeDescriptor<IValueDictionary>())
-							{
-								hint = TypeInfoHint::Unknown;
-							}
-							result = MakePtr<TypeDescriptorTypeInfo>(scopeName->typeDescriptor, hint);
+							result = MakePtr<TypeDescriptorTypeInfo>(scopeName->typeDescriptor, TypeInfoHint::Normal);
 						}
 						else
 						{
@@ -11937,7 +11941,7 @@ ValidateSemantic(Expression)
 							manager->errors.Add(WfErrors::RangeShouldBeInteger(node, elementType.Obj()));
 						}
 
-						auto enumerableType = MakePtr<TypeDescriptorTypeInfo>(description::GetTypeDescriptor<IValueEnumerable>(), TypeInfoHint::Unknown);
+						auto enumerableType = MakePtr<TypeDescriptorTypeInfo>(description::GetTypeDescriptor<IValueEnumerable>(), TypeInfoHint::Normal);
 						auto genericType = MakePtr<GenericTypeInfo>(enumerableType);
 						genericType->AddGenericArgument(elementType);
 
@@ -12082,7 +12086,7 @@ ValidateSemantic(Expression)
 						{
 							if (keyType && valueType)
 							{
-								auto classType = MakePtr<TypeDescriptorTypeInfo>(description::GetTypeDescriptor<IValueDictionary>(), TypeInfoHint::Unknown);
+								auto classType = MakePtr<TypeDescriptorTypeInfo>(description::GetTypeDescriptor<IValueDictionary>(), TypeInfoHint::Normal);
 								auto genericType = MakePtr<GenericTypeInfo>(classType);
 								genericType->AddGenericArgument(keyType);
 								genericType->AddGenericArgument(valueType);
@@ -12095,7 +12099,7 @@ ValidateSemantic(Expression)
 						{
 							if (keyType)
 							{
-								auto classType = MakePtr<TypeDescriptorTypeInfo>(description::GetTypeDescriptor<IValueList>(), TypeInfoHint::Unknown);
+								auto classType = MakePtr<TypeDescriptorTypeInfo>(description::GetTypeDescriptor<IValueList>(), TypeInfoHint::Normal);
 								auto genericType = MakePtr<GenericTypeInfo>(classType);
 								genericType->AddGenericArgument(keyType);
 
@@ -15716,6 +15720,13 @@ WfCollectClassMemberVisitor
 
 				void Visit(WfConstructorDeclaration* node)override
 				{
+					FOREACH(Ptr<WfBaseConstructorCall>, call, node->baseConstructorCalls)
+					{
+						FOREACH(Ptr<WfExpression>, argument, call->arguments)
+						{
+							CollectExpression(config, argument, memberOfClass);
+						}
+					}
 					CollectStatement(config, node->statement, memberOfClass);
 				}
 
@@ -16484,18 +16495,19 @@ WfGenerateExpressionVisitor
 				template<typename TReturnValue>
 				void WriteReturnValue(ITypeInfo* type, const TReturnValue& returnValueCallback, bool castReturnValue)
 				{
-					if (castReturnValue && IsCppRefGenericType(type))
+					if (castReturnValue)
 					{
-						writer.WriteString(L"[&](){ decltype(auto) __vwsn_temp__ = ");
-						returnValueCallback();
-						writer.WriteString(L"; return ::vl::__vwsn::Unbox<");
-						writer.WriteString(config->ConvertType(type));
-						writer.WriteString(L">(::vl::reflection::description::BoxParameter<decltype(__vwsn_temp__)>(__vwsn_temp__)); }()");
-					}
-					else
-					{
-						returnValueCallback();
+						if (IsCppRefGenericType(type) || type->GetHint() == TypeInfoHint::NativeCollectionReference)
+						{
+							writer.WriteString(L"::vl::__vwsn::UnboxCollection<");
+							writer.WriteString(config->ConvertType(type->GetTypeDescriptor()));
+							writer.WriteString(L">(");
+							returnValueCallback();
+							writer.WriteString(L")");
+							return;
+						}
 					}
+					returnValueCallback();
 				}
 
 				template<typename TType, typename TInvoke, typename TArgument, typename TInfo>
@@ -16903,6 +16915,10 @@ WfGenerateExpressionVisitor
 
 				void Visit(WfMemberExpression* node)override
 				{
+					if (node->name.value == L"MyList")
+					{
+						int a = 0;
+					}
 					auto result = config->manager->expressionResolvings[node];
 					auto parentResult = config->manager->expressionResolvings[node->parent.Obj()];
 					WriteReferenceTemplate(result,
@@ -17451,12 +17467,16 @@ WfGenerateExpressionVisitor
 
 				void Visit(WfIfExpression* node)override
 				{
+					auto firstResult = config->manager->expressionResolvings[node->trueBranch.Obj()];
+					auto secondResult = config->manager->expressionResolvings[node->falseBranch.Obj()];
+					auto mergedType = GetMergedType(firstResult.type, secondResult.type);
+
 					writer.WriteString(L"(");
 					Call(node->condition);
 					writer.WriteString(L" ? ");
-					Call(node->trueBranch);
+					Call(node->trueBranch, mergedType.Obj());
 					writer.WriteString(L" : ");
-					Call(node->falseBranch);
+					Call(node->falseBranch, mergedType.Obj());
 					writer.WriteString(L")");
 				}
 
@@ -18603,6 +18623,7 @@ MergeCppFile
 			void ProcessCppContent(const WString& code, const TCallback& callback)
 			{
 				vint state = NORMAL;
+				vint counter = 0;
 
 				StringReader reader(code);
 				while (!reader.IsEnd())
@@ -18644,9 +18665,20 @@ MergeCppFile
 							}
 							break;
 						case WAIT_CLOSE:
-							if (content == L"}")
+							if (content == L"{")
 							{
-								state = NORMAL;
+								counter++;
+							}
+							else if (content == L"}")
+							{
+								if (counter == 0)
+								{
+									state = NORMAL;
+								}
+								else
+								{
+									counter--;
+								}
 							}
 							break;
 						}
diff --git a/Tutorial/GacUI_Layout/RichTextEmbedding/UI/Source/DemoPartialClasses.cpp b/Tutorial/GacUI_Layout/RichTextEmbedding/UI/Source/DemoPartialClasses.cpp
index a3e471ee..d8e705bf 100644
--- a/Tutorial/GacUI_Layout/RichTextEmbedding/UI/Source/DemoPartialClasses.cpp
+++ b/Tutorial/GacUI_Layout/RichTextEmbedding/UI/Source/DemoPartialClasses.cpp
@@ -149,7 +149,7 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_6.Obj())->NotifyDataModified();
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_5.Obj())->Children().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_6));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_5.Obj())->Children()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_6));
 		}
 		(::vl::__vwsn::This(this)->__vwsn_precompile_7 = ::vl::Ptr<::vl::presentation::controls::tree::MemoryNodeProvider>(new ::vl::presentation::controls::tree::MemoryNodeProvider(::vl::Ptr<::vl::presentation::controls::tree::TreeViewItem>(new ::vl::presentation::controls::tree::TreeViewItem()))));
 		{
@@ -157,10 +157,10 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_7.Obj())->NotifyDataModified();
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_5.Obj())->Children().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_7));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_5.Obj())->Children()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_7));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_4)->Nodes().Obj())->Children().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_5));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_4)->Nodes().Obj())->Children()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_5));
 		}
 		{
 			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_3.Obj())->GetContainer())->AddChild(::vl::__vwsn::Ensure(static_cast<::vl::presentation::compositions::GuiGraphicsComposition*>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_4)->GetBoundsComposition())));
@@ -195,7 +195,7 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_13)->SetText(::vl::WString(L"New", false));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_13));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_13));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuItemButtonStyle();
@@ -208,7 +208,7 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_14)->SetText(::vl::WString(L"Open", false));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_14));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_14));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuItemButtonStyle();
@@ -221,7 +221,7 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_15)->SetText(::vl::WString(L"Save", false));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_15));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_15));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuItemButtonStyle();
@@ -234,14 +234,14 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_16)->SetText(::vl::WString(L"Save As ...", false));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_16));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_16));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuSplitterStyle();
 			(::vl::__vwsn::This(this)->__vwsn_precompile_17 = new ::vl::presentation::controls::GuiControl(__vwsn_controlStyle_));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_17));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_17));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuItemButtonStyle();
@@ -254,10 +254,10 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_18)->SetText(::vl::WString(L"Exit", false));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_18));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_12)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_18));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_10)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_11));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_10)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_11));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuBarButtonStyle();
@@ -281,7 +281,7 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_21)->SetText(::vl::WString(L"Undo", false));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_21));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_21));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuItemButtonStyle();
@@ -294,14 +294,14 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_22)->SetText(::vl::WString(L"Redo", false));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_22));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_22));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuSplitterStyle();
 			(::vl::__vwsn::This(this)->__vwsn_precompile_23 = new ::vl::presentation::controls::GuiControl(__vwsn_controlStyle_));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_23));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_23));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuItemButtonStyle();
@@ -314,7 +314,7 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_24)->SetText(::vl::WString(L"Cut", false));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_24));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_24));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuItemButtonStyle();
@@ -327,7 +327,7 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_25)->SetText(::vl::WString(L"Copy", false));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_25));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_25));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuItemButtonStyle();
@@ -340,14 +340,14 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_26)->SetText(::vl::WString(L"Paste", false));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_26));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_26));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuSplitterStyle();
 			(::vl::__vwsn::This(this)->__vwsn_precompile_27 = new ::vl::presentation::controls::GuiControl(__vwsn_controlStyle_));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_27));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_27));
 		}
 		{
 			auto __vwsn_controlStyle_ = ::vl::__vwsn::This(::vl::presentation::theme::GetCurrentTheme())->CreateMenuItemButtonStyle();
@@ -360,10 +360,10 @@ namespace demo
 			::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_28)->SetText(::vl::WString(L"Select All", false));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_28));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_20)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_28));
 		}
 		{
-			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_10)->GetToolstripItems().Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_19));
+			::vl::__vwsn::This(::vl::__vwsn::UnboxCollection<::vl::reflection::description::IValueList>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_10)->GetToolstripItems()).Obj())->Add(::vl::__vwsn::Box(::vl::__vwsn::This(this)->__vwsn_precompile_19));
 		}
 		{
 			::vl::__vwsn::This(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_9.Obj())->GetContainer())->AddChild(::vl::__vwsn::Ensure(static_cast<::vl::presentation::compositions::GuiGraphicsComposition*>(::vl::__vwsn::This(::vl::__vwsn::This(this)->__vwsn_precompile_10)->GetBoundsComposition())));
diff --git a/Tutorial/GacUI_Layout/UIRes/RichTextEmbedding.bin b/Tutorial/GacUI_Layout/UIRes/RichTextEmbedding.bin
index fe2441ba..b990c647 100644
Binary files a/Tutorial/GacUI_Layout/UIRes/RichTextEmbedding.bin and b/Tutorial/GacUI_Layout/UIRes/RichTextEmbedding.bin differ