diff --git a/Import/VlppWorkflow.cpp b/Import/VlppWorkflow.cpp
index e5e34d67..7edb43b3 100644
--- a/Import/VlppWorkflow.cpp
+++ b/Import/VlppWorkflow.cpp
@@ -20562,8 +20562,8 @@ WfMethodBase
 			}
 
 
-			WfMethodBase::WfMethodBase()
-				:MethodInfoImpl(nullptr, nullptr, true)
+			WfMethodBase::WfMethodBase(bool isStatic)
+				:MethodInfoImpl(nullptr, nullptr, isStatic)
 			{
 			}
 
@@ -20598,6 +20598,11 @@ WfStaticMethod
 				return Value::From(lambda);
 			}
 
+			WfStaticMethod::WfStaticMethod()
+				:WfMethodBase(true)
+			{
+			}
+
 /***********************************************************************
 WfInterfaceMethod
 ***********************************************************************/
@@ -20612,6 +20617,11 @@ WfInterfaceMethod
 				throw 0;
 			}
 
+			WfInterfaceMethod::WfInterfaceMethod()
+				:WfMethodBase(false)
+			{
+			}
+
 /***********************************************************************
 WfEvent
 ***********************************************************************/
diff --git a/Import/VlppWorkflow.h b/Import/VlppWorkflow.h
index b73ebf27..c5393d75 100644
--- a/Import/VlppWorkflow.h
+++ b/Import/VlppWorkflow.h
@@ -2065,7 +2065,7 @@ Method
 				
 				void									SetGlobalContext(runtime::WfRuntimeGlobalContext* _globalContext);
 			public:
-				WfMethodBase();
+				WfMethodBase(bool isStatic);
 				~WfMethodBase();
 
 				runtime::WfRuntimeGlobalContext*		GetGlobalContext();
@@ -2081,6 +2081,8 @@ Method
 				Value									CreateFunctionProxyInternal(const Value& thisObject)override;
 			public:
 				vint									functionIndex = -1;
+
+				WfStaticMethod();
 			};
 
 			class WfInterfaceMethod : public WfMethodBase
@@ -2091,6 +2093,7 @@ Method
 				Value									InvokeInternal(const Value& thisObject, collections::Array<Value>& arguments)override;
 				Value									CreateFunctionProxyInternal(const Value& thisObject)override;
 			public:
+				WfInterfaceMethod();
 			};
 
 /***********************************************************************
diff --git a/Tools/GacGen.exe b/Tools/GacGen.exe
index 7b220984..e9bb2b97 100644
Binary files a/Tools/GacGen.exe and b/Tools/GacGen.exe differ
diff --git a/Tutorial/GacUI_Layout/UIRes/RichTextEmbedding.bin b/Tutorial/GacUI_Layout/UIRes/RichTextEmbedding.bin
index 0bb93fbe..bc8f7397 100644
Binary files a/Tutorial/GacUI_Layout/UIRes/RichTextEmbedding.bin and b/Tutorial/GacUI_Layout/UIRes/RichTextEmbedding.bin differ