diff --git a/Tutorial/GacUI_Xml/Binding_Bind/Main.cpp b/Tutorial/GacUI_Xml/Binding_Bind/Main.cpp
index f6d0e3aa..bdd930ee 100644
--- a/Tutorial/GacUI_Xml/Binding_Bind/Main.cpp
+++ b/Tutorial/GacUI_Xml/Binding_Bind/Main.cpp
@@ -13,9 +13,8 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Binding_Bind.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window;
diff --git a/Tutorial/GacUI_Xml/Binding_Eval/Main.cpp b/Tutorial/GacUI_Xml/Binding_Eval/Main.cpp
index bb927ae1..8a2d102f 100644
--- a/Tutorial/GacUI_Xml/Binding_Eval/Main.cpp
+++ b/Tutorial/GacUI_Xml/Binding_Eval/Main.cpp
@@ -13,9 +13,8 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Binding_Eval.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window;
diff --git a/Tutorial/GacUI_Xml/Binding_Format/Main.cpp b/Tutorial/GacUI_Xml/Binding_Format/Main.cpp
index db7b6192..58988f77 100644
--- a/Tutorial/GacUI_Xml/Binding_Format/Main.cpp
+++ b/Tutorial/GacUI_Xml/Binding_Format/Main.cpp
@@ -13,9 +13,8 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Binding_Format.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window;
diff --git a/Tutorial/GacUI_Xml/Binding_Uri/Main.cpp b/Tutorial/GacUI_Xml/Binding_Uri/Main.cpp
index b6609658..7c43559a 100644
--- a/Tutorial/GacUI_Xml/Binding_Uri/Main.cpp
+++ b/Tutorial/GacUI_Xml/Binding_Uri/Main.cpp
@@ -13,9 +13,8 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Binding_Uri.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window;
diff --git a/Tutorial/GacUI_Xml/Binding_ViewModel/Main.cpp b/Tutorial/GacUI_Xml/Binding_ViewModel/Main.cpp
index 2a4f8a9e..5ca79404 100644
--- a/Tutorial/GacUI_Xml/Binding_ViewModel/Main.cpp
+++ b/Tutorial/GacUI_Xml/Binding_ViewModel/Main.cpp
@@ -22,9 +22,8 @@ public:
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Binding_ViewModel.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window(new ViewModelImpl);
diff --git a/Tutorial/GacUI_Xml/Event_Cpp/Main.cpp b/Tutorial/GacUI_Xml/Event_Cpp/Main.cpp
index b980f45f..0aaf21f5 100644
--- a/Tutorial/GacUI_Xml/Event_Cpp/Main.cpp
+++ b/Tutorial/GacUI_Xml/Event_Cpp/Main.cpp
@@ -13,9 +13,8 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Event_Cpp.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window;
diff --git a/Tutorial/GacUI_Xml/Event_Script/Main.cpp b/Tutorial/GacUI_Xml/Event_Script/Main.cpp
index aa5e0509..9181218d 100644
--- a/Tutorial/GacUI_Xml/Event_Script/Main.cpp
+++ b/Tutorial/GacUI_Xml/Event_Script/Main.cpp
@@ -13,9 +13,8 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Event_Script.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window;
diff --git a/Tutorial/GacUI_Xml/Event_ViewModel/Main.cpp b/Tutorial/GacUI_Xml/Event_ViewModel/Main.cpp
index 96a3ffb7..bf5567c5 100644
--- a/Tutorial/GacUI_Xml/Event_ViewModel/Main.cpp
+++ b/Tutorial/GacUI_Xml/Event_ViewModel/Main.cpp
@@ -27,9 +27,8 @@ public:
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Event_ViewModel.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window(new ViewModelImpl);
diff --git a/Tutorial/GacUI_Xml/Instance_Control/Main.cpp b/Tutorial/GacUI_Xml/Instance_Control/Main.cpp
index 237d08ca..cd26118e 100644
--- a/Tutorial/GacUI_Xml/Instance_Control/Main.cpp
+++ b/Tutorial/GacUI_Xml/Instance_Control/Main.cpp
@@ -13,9 +13,8 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Instance_Control.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window;
diff --git a/Tutorial/GacUI_Xml/Instance_MultipleWindows/Main.cpp b/Tutorial/GacUI_Xml/Instance_MultipleWindows/Main.cpp
index ca900087..d47b62f1 100644
--- a/Tutorial/GacUI_Xml/Instance_MultipleWindows/Main.cpp
+++ b/Tutorial/GacUI_Xml/Instance_MultipleWindows/Main.cpp
@@ -13,9 +13,8 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Instance_MultipleWindows.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window;
diff --git a/Tutorial/GacUI_Xml/Instance_Window/Main.cpp b/Tutorial/GacUI_Xml/Instance_Window/Main.cpp
index 4d15685e..8c61dd5c 100644
--- a/Tutorial/GacUI_Xml/Instance_Window/Main.cpp
+++ b/Tutorial/GacUI_Xml/Instance_Window/Main.cpp
@@ -13,9 +13,8 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Instance_Window.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window;
diff --git a/Tutorial/GacUI_Xml/Member_Field/Main.cpp b/Tutorial/GacUI_Xml/Member_Field/Main.cpp
index ac3fdb73..80317676 100644
--- a/Tutorial/GacUI_Xml/Member_Field/Main.cpp
+++ b/Tutorial/GacUI_Xml/Member_Field/Main.cpp
@@ -13,9 +13,8 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Member_Field.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window;
diff --git a/Tutorial/GacUI_Xml/Member_Field/UI/Resource.xml b/Tutorial/GacUI_Xml/Member_Field/UI/Resource.xml
index bb85aa4e..a7127144 100644
--- a/Tutorial/GacUI_Xml/Member_Field/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Member_Field/UI/Resource.xml
@@ -11,7 +11,6 @@
   <Folder name="MainWindow">
     <Instance name="MainWindowResource">
       <Instance ref.CodeBehind="true" ref.Class="demo::MainWindow">
-        <ref.State Name="integerState" Type="int" Value="0"/>
         <ref.Members>
           <![CDATA[
             @cpp:Protected
diff --git a/Tutorial/GacUI_Xml/Member_Parameter/Main.cpp b/Tutorial/GacUI_Xml/Member_Parameter/Main.cpp
index a3077e18..3298250a 100644
--- a/Tutorial/GacUI_Xml/Member_Parameter/Main.cpp
+++ b/Tutorial/GacUI_Xml/Member_Parameter/Main.cpp
@@ -22,9 +22,8 @@ public:
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Member_Parameter.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window(new ViewModelImpl);
diff --git a/Tutorial/GacUI_Xml/Member_Property/Main.cpp b/Tutorial/GacUI_Xml/Member_Property/Main.cpp
index f5d58199..504a44a9 100644
--- a/Tutorial/GacUI_Xml/Member_Property/Main.cpp
+++ b/Tutorial/GacUI_Xml/Member_Property/Main.cpp
@@ -13,9 +13,8 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 void GuiMain()
 {
 	{
-		List<WString> errors;
 		FileStream fileStream(L"../UIRes/Member_Property.bin", FileStream::ReadOnly);
-		auto resource = GuiResource::LoadPrecompiledBinary(fileStream, errors);
+		auto resource = GuiResource::LoadPrecompiledBinary(fileStream);
 		GetResourceManager()->SetResource(L"Resource", resource);
 	}
 	demo::MainWindow window;
diff --git a/Tutorial/GacUI_Xml/Member_Property/UI/Resource.xml b/Tutorial/GacUI_Xml/Member_Property/UI/Resource.xml
index 694be8e2..d82d0df0 100644
--- a/Tutorial/GacUI_Xml/Member_Property/UI/Resource.xml
+++ b/Tutorial/GacUI_Xml/Member_Property/UI/Resource.xml
@@ -24,25 +24,7 @@
       <Instance ref.CodeBehind="false" ref.Class="demo::MyControl" xmlns:x="presentation::controls::GuiSelectableButton::*">
         <ref.Members>
           <![CDATA[
-            @cpp:Protected
-            var selectedOption : string = "A";
-            event SelectedOptionChanged();
-            
-            func GetSelectedOption() : string
-            {
-              return selectedOption;
-            }
-            
-            func SetSelectedOption(value : string) : void
-            {
-              if (selectedOption != value)
-              {
-                selectedOption = value;
-                SelectedOptionChanged();
-              }
-            }
-            
-            prop SelectedOption : string {GetSelectedOption, SetSelectedOption : SelectedOptionChanged}
+            prop SelectedOption : string = "A" {}
           ]]>
         </ref.Members>
         <CustomControl ref.Name="self">
diff --git a/Tutorial/GacUI_Xml/Member_Property/UI/Source/DemoPartialClasses.cpp b/Tutorial/GacUI_Xml/Member_Property/UI/Source/DemoPartialClasses.cpp
index 5ba2c18e..39d622fd 100644
--- a/Tutorial/GacUI_Xml/Member_Property/UI/Source/DemoPartialClasses.cpp
+++ b/Tutorial/GacUI_Xml/Member_Property/UI/Source/DemoPartialClasses.cpp
@@ -475,14 +475,13 @@ Class (::demo::MyControl)
 
 	::vl::WString MyControl::GetSelectedOption()
 	{
-		return ::vl::__vwsn::This(this)->selectedOption;
+		return ::vl::__vwsn::This(this)->__vwsn_prop_SelectedOption;
 	}
-
-	void MyControl::SetSelectedOption(const ::vl::WString& value)
+	void MyControl::SetSelectedOption(const ::vl::WString& __vwsn_value_)
 	{
-		if ((::vl::__vwsn::This(this)->selectedOption != value))
+		if ((::vl::__vwsn::This(this)->__vwsn_prop_SelectedOption != __vwsn_value_))
 		{
-			(::vl::__vwsn::This(this)->selectedOption = value);
+			(::vl::__vwsn::This(this)->__vwsn_prop_SelectedOption = __vwsn_value_);
 			::vl::__vwsn::EventInvoke(::vl::__vwsn::This(this)->SelectedOptionChanged)();
 		}
 	}
@@ -539,10 +538,10 @@ namespace vl
 			BEGIN_CLASS_MEMBER(::demo::MyControl)
 				CLASS_MEMBER_CONSTRUCTOR(::demo::MyControl*(), NO_PARAMETER)
 				CLASS_MEMBER_METHOD(GetSelectedOption, NO_PARAMETER)
-				CLASS_MEMBER_METHOD(SetSelectedOption, { L"value" })
+				CLASS_MEMBER_METHOD(SetSelectedOption, { L"__vwsn_value_" })
 				CLASS_MEMBER_EVENT(SelectedOptionChanged)
+				CLASS_MEMBER_FIELD(__vwsn_prop_SelectedOption)
 				CLASS_MEMBER_PROPERTY_EVENT(SelectedOption, GetSelectedOption, SetSelectedOption, SelectedOptionChanged)
-				CLASS_MEMBER_FIELD(selectedOption)
 			END_CLASS_MEMBER(::demo::MyControl)
 
 			BEGIN_CLASS_MEMBER(::demo::MyControlConstructor)
diff --git a/Tutorial/GacUI_Xml/Member_Property/UI/Source/DemoPartialClasses.h b/Tutorial/GacUI_Xml/Member_Property/UI/Source/DemoPartialClasses.h
index b2c98147..56aff6a5 100644
--- a/Tutorial/GacUI_Xml/Member_Property/UI/Source/DemoPartialClasses.h
+++ b/Tutorial/GacUI_Xml/Member_Property/UI/Source/DemoPartialClasses.h
@@ -111,12 +111,11 @@ namespace demo
 #ifndef VCZH_DEBUG_NO_REFLECTION
 		friend struct ::vl::reflection::description::CustomTypeDescriptorSelector<MyControl>;
 #endif
-	protected:
-		::vl::WString selectedOption = ::vl::WString(L"A", false);
 	public:
-		::vl::Event<void()> SelectedOptionChanged;
+		::vl::WString __vwsn_prop_SelectedOption = ::vl::WString(L"A", false);
 		::vl::WString GetSelectedOption();
-		void SetSelectedOption(const ::vl::WString& value);
+		void SetSelectedOption(const ::vl::WString& __vwsn_value_);
+		::vl::Event<void()> SelectedOptionChanged;
 		MyControl();
 		~MyControl();
 	};