diff --git a/SampleForDoc/GacUI/UIRes/32bits/control_ribbon_gallery.bin b/SampleForDoc/GacUI/UIRes/32bits/control_ribbon_gallery.bin
index 42802e68..da9ad496 100644
Binary files a/SampleForDoc/GacUI/UIRes/32bits/control_ribbon_gallery.bin and b/SampleForDoc/GacUI/UIRes/32bits/control_ribbon_gallery.bin differ
diff --git a/SampleForDoc/GacUI/UIRes/64bits/control_ribbon_gallery.bin b/SampleForDoc/GacUI/UIRes/64bits/control_ribbon_gallery.bin
index eaff77fc..d8c936c7 100644
Binary files a/SampleForDoc/GacUI/UIRes/64bits/control_ribbon_gallery.bin and b/SampleForDoc/GacUI/UIRes/64bits/control_ribbon_gallery.bin differ
diff --git a/SampleForDoc/GacUI/XmlRes/control_ribbon_gallery/Resource.xml b/SampleForDoc/GacUI/XmlRes/control_ribbon_gallery/Resource.xml
index c2429c28..254af6e0 100644
--- a/SampleForDoc/GacUI/XmlRes/control_ribbon_gallery/Resource.xml
+++ b/SampleForDoc/GacUI/XmlRes/control_ribbon_gallery/Resource.xml
@@ -32,15 +32,15 @@
           {
             prop IconColor : Color = (cast Color "#000000") {not observe}
 
-            new(color: Color) { IconColor = color; }
+            new(color: Color) { this.IconColor = color; }
           }
 
           class ColorGroup
           {
-            prop Items : observe ColorItem^[] = null {not observe}
+            prop Items : observe ColorItem^[] = {} {not observe}
             prop Name : string = "" {not observe}
 
-            new(name: string, items: observe ColorItem^[]) { Name = name; Items = items; }
+            new(name: string) { this.Name = name; }
           }
         }
       ]]></Workflow>
@@ -63,28 +63,33 @@
     <Instance name="MainWindowResource">
       <Instance ref.Class="sample::MainWindow">
         <ref.Members><![CDATA[
-          var groups : observe ColorGroup^[] =
+          static func CreateGroups(): (observe ColorGroup^[])
           {
-            new ColorGroup^("Group One",
+            var groups : observe ColorGroup^[] = {};
             {
-              new sample::ColorItem^(cast Color "#000000");
-              new sample::ColorItem^(cast Color "#FFFFFF");
-            } as (observe sample::ColorItem^[]));
-            
-            new ColorGroup^("Group Two",
+              var group = new ColorGroup^("Group One");
+              groups.Add(group);
+              group.Items.Add(new sample::ColorItem^(cast Color "#000000"));
+              group.Items.Add(new sample::ColorItem^(cast Color "#FFFFFF"));
+            }
             {
-              new sample::ColorItem^(cast Color "#FF0000");
-              new sample::ColorItem^(cast Color "#00FF00");
-              new sample::ColorItem^(cast Color "#0000FF");
-            } as (observe sample::ColorItem^[]));
-            
-            new ColorGroup^("Group Two",
+              var group = new ColorGroup^("Group Two");
+              groups.Add(group);
+              group.Items.Add(new sample::ColorItem^(cast Color "#FF0000"));
+              group.Items.Add(new sample::ColorItem^(cast Color "#00FF00"));
+              group.Items.Add(new sample::ColorItem^(cast Color "#0000FF"));
+            }
             {
-              new sample::ColorItem^(cast Color "#FFFF00");
-              new sample::ColorItem^(cast Color "#FF00FF");
-              new sample::ColorItem^(cast Color "#00FFFF");
-            } as (observe sample::ColorItem^[]));
-          };
+              var group = new ColorGroup^("Group Three");
+              groups.Add(group);
+              group.Items.Add(new sample::ColorItem^(cast Color "#FFFF00"));
+              group.Items.Add(new sample::ColorItem^(cast Color "#FF00FF"));
+              group.Items.Add(new sample::ColorItem^(cast Color "#00FFFF"));
+            }
+            return groups;
+          }
+
+          var colorGroups : observe ColorGroup^[] = CreateGroups();
         ]]></ref.Members>
         <Window ref.Name="self" Text="control_ribbon_gallery" ClientSize="x:640 y:480">
           <MessageDialog ref.Name="dialogMessage" Title="You Expanded a Group!" Text="GuiRibbonGroup::ExpandButtonClicked is executed!"/>
@@ -115,25 +120,25 @@
                       <RibbonGroup Text="Something" LargeImage-uri="res://ToolbarImages/PasteLarge">
                         <att.Items>
                           <BindableRibbonGalleryList MinCount="2" MaxCount="5" VisibleItemCount="5" ItemTemplate="sample::ColorItemTemplate" env.ItemType="sample::ColorGroup^">
-                            <att.ItemSource-bind>self.groups</att.ItemSource-bind>
+                            <att.ItemSource-bind>self.colorGroups</att.ItemSource-bind>
                             <att.GroupTitleProperty>Name</att.GroupTitleProperty>
                             <att.GroupChildrenProperty>Items</att.GroupChildrenProperty>
                             <att.SubMenu-set>
                               <ToolstripGroupContainer>
                                 <ToolstripGroup>
                                   <RibbonToolstripHeader Text="Undo / Redo"/>
-                                  <ToolstripButton Command-ref="commandUndo"/>
-                                  <ToolstripButton Command-ref="commandRedo"/>
+                                  <MenuItemButton Command-ref="commandUndo"/>
+                                  <MenuItemButton Command-ref="commandRedo"/>
                                 </ToolstripGroup>
                                 <ToolstripGroup>
                                   <RibbonToolstripHeader Text="Edit"/>
-                                  <ToolstripButton Command-ref="commandCut"/>
-                                  <ToolstripButton Command-ref="commandCopy"/>
-                                  <ToolstripButton Command-ref="commandPaste"/>
+                                  <MenuItemButton Command-ref="commandCut"/>
+                                  <MenuItemButton Command-ref="commandCopy"/>
+                                  <MenuItemButton Command-ref="commandPaste"/>
                                 </ToolstripGroup>
                                 <ToolstripGroup>
                                   <RibbonToolstripHeader Text="Delete"/>
-                                  <ToolstripButton Command-ref="commandDelete"/>
+                                  <MenuItemButton Command-ref="commandDelete"/>
                                 </ToolstripGroup>
                               </ToolstripGroupContainer>
                             </att.SubMenu-set>
diff --git a/TODO.md b/TODO.md
index e52ad999..0b031287 100644
--- a/TODO.md
+++ b/TODO.md
@@ -9,6 +9,7 @@ https://zhuanlan.zhihu.com/p/39369370
 - [ ] `GlobalStringKey` need to remember the `GlobalStringKeyManager` object, and if the global object is changed, it means this key becomes a wild pointer, it should crash.
 - [ ] Collection literal `{a b c}` should react to the "receiving type" if the receiving type is a known collection type.
   - So that it is able to do `DealWithObservableList({1 2 3});`
+- [ ] `new(name: string, items: observe X^[]) { this.Name = name; this.Items = items; }` doesn't work for `items`.
 - [ ] `let X = Y in (F(X.a.b.c))` reports `X does not exist in the current scope` in binding property value
   - while `F((let X = Y.a.b).c)` works
 - [ ] GacGen reports only "error dumping resource file" while the resource file contains some syntax errors preventing GacGen from reading it