diff --git a/README.md b/README.md
index c986e22..887a729 100644
--- a/README.md
+++ b/README.md
@@ -14,11 +14,10 @@ the main goal of the repo is to make graph creation easier and more intuitive.
 * Scene object nodes hold scene objects like blackboard
 
 # Some to-dos
-* Port connectivity of two types have implicit conversion 
-* Node placemat
 * Vertical node
 * A universal merger handle multiple input 
-* Support static graph data traversal
+* Support graph data traversal like FSM
+* Conditional edge
 
 # Install & Usage
 Right now this lib is still under development.
diff --git a/TNode/Samples/New HelloGraph.asset b/TNode/Samples/New HelloGraph.asset
index f699d86..0ea0f1e 100644
--- a/TNode/Samples/New HelloGraph.asset	
+++ b/TNode/Samples/New HelloGraph.asset	
@@ -43,8 +43,8 @@ MonoBehaviour:
       data:
         positionInView:
           serializedVersion: 2
-          x: 297
-          y: 280
+          x: 519
+          y: 361
           width: 0
           height: 0
         id: 4414d05b-da96-465e-a593-2e3dcfceaf23
@@ -58,8 +58,8 @@ MonoBehaviour:
       data:
         positionInView:
           serializedVersion: 2
-          x: 225
-          y: 382
+          x: 519
+          y: 443
           width: 0
           height: 0
         id: 1a4fd419-5584-4d43-a8c3-bebcad63a337
@@ -73,8 +73,8 @@ MonoBehaviour:
       data:
         positionInView:
           serializedVersion: 2
-          x: 488
-          y: 280
+          x: 630
+          y: 361
           width: 0
           height: 0
         id: 3e72627f-af97-4056-b89c-04d4f2f127f5
@@ -107,6 +107,8 @@ MonoBehaviour:
           width: 0
           height: 0
         id: 
+        CommentedModel:
+          id: 2
         CommentText: 
     00000005:
       type: {class: GraphViewModel, ns: TNode.TNodeCore.Editor.Models, asm: NewAssembly}
@@ -119,5 +121,5 @@ MonoBehaviour:
           height: 0
         id: 
         persistScale: 1
-        persistOffset: {x: 114, y: -155}
+        persistOffset: {x: -302, y: -93}
         isBlackboardOn: 1
diff --git a/TNode/TNodeCore/Editor/CommentView/CommentView.cs b/TNode/TNodeCore/Editor/CommentView/CommentView.cs
index a9a9a9a..d2bc620 100644
--- a/TNode/TNodeCore/Editor/CommentView/CommentView.cs
+++ b/TNode/TNodeCore/Editor/CommentView/CommentView.cs
@@ -1,6 +1,9 @@
-using TNode.TNodeCore.Editor.Binding;
+using System;
+using TNode.TNodeCore.Editor.Binding;
 using TNode.TNodeCore.Editor.Models;
+using TNodeCore.Editor.NodeGraphView;
 using UnityEditor.Experimental.GraphView;
+using UnityEngine;
 using UnityEngine.UIElements;
 
 namespace TNode.TNodeCore.Editor.CommentView{
@@ -14,13 +17,30 @@ namespace TNode.TNodeCore.Editor.CommentView{
 
         public CommentView(){
             var txtField = new TextField();
+            var btn = new Button(() => {
+                var graphElement = (Node) this.GetFirstOfType<Node>();
+                graphElement.Remove(this);
+            });
+            btn.text = "-";
+            this.Add(btn);
             this.Add(txtField);
             txtField.RegisterValueChangedCallback(evt => {
                 if (_data != null){
                     _data.CommentText = evt.newValue;
                 }
             });
+            
+            
+            
+            capabilities |= Capabilities.Collapsible | Capabilities.Deletable|Capabilities.Selectable;
+            
+            styleSheets.Add(Resources.Load<StyleSheet>("CommentView"));
+        }
+
+        private void ClickComment(){
+           
         }
+
         public void OnChange(){
             var str = this._data.CommentText;
             this.Q<TextField>().value = str;
diff --git a/TNode/TNodeCore/Editor/Models/Comment.cs b/TNode/TNodeCore/Editor/Models/Comment.cs
index c0b6854..8143709 100644
--- a/TNode/TNodeCore/Editor/Models/Comment.cs
+++ b/TNode/TNodeCore/Editor/Models/Comment.cs
@@ -1,7 +1,9 @@
 using TNodeCore.Runtime.Models;
+using UnityEngine;
 
 namespace TNode.TNodeCore.Editor.Models{
     public class Comment:EditorModel{
+        [SerializeReference]
         public Model CommentedModel;
         public string CommentText;
     }
diff --git a/TNode/TNodeCore/Editor/Resources/CommentView.uss b/TNode/TNodeCore/Editor/Resources/CommentView.uss
new file mode 100644
index 0000000..7501cb0
--- /dev/null
+++ b/TNode/TNodeCore/Editor/Resources/CommentView.uss
@@ -0,0 +1,6 @@
+TextField{
+    min-width: 400px;
+}
+{
+    flex-direction: row;
+}
\ No newline at end of file
diff --git a/TNode/TNodeCore/Editor/Resources/CommentView.uss.meta b/TNode/TNodeCore/Editor/Resources/CommentView.uss.meta
new file mode 100644
index 0000000..65b376b
--- /dev/null
+++ b/TNode/TNodeCore/Editor/Resources/CommentView.uss.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 03185df2d8c7459fb302d053876477b6
+timeCreated: 1660101516
\ No newline at end of file
diff --git a/TNode/TNodeCore/Editor/Tools/GraphEditorCreator/GraphEditorCreator.cs b/TNode/TNodeCore/Editor/Tools/GraphEditorCreator/GraphEditorCreator.cs
index aadb174..679ce25 100644
--- a/TNode/TNodeCore/Editor/Tools/GraphEditorCreator/GraphEditorCreator.cs
+++ b/TNode/TNodeCore/Editor/Tools/GraphEditorCreator/GraphEditorCreator.cs
@@ -146,7 +146,6 @@ namespace TNodeCore.Editor.Tools.GraphEditorCreator{
             //Create an NodeAttribute Editor Data Instance for the new graph editor
             var graphEditorData = ScriptableObject.CreateInstance<GraphEditorData>();
             graphEditorData.name = editorName;
-
             VisualTreeAsset defaultEditorTree = Resources.Load<VisualTreeAsset>("GraphEditor");
             EditorUtility.SetDirty(graphEditorData);
 
diff --git a/TNode/TNodeCore/Runtime/Models/Model.cs b/TNode/TNodeCore/Runtime/Models/Model.cs
index 429daa8..8f8a216 100644
--- a/TNode/TNodeCore/Runtime/Models/Model.cs
+++ b/TNode/TNodeCore/Runtime/Models/Model.cs
@@ -11,6 +11,7 @@ namespace TNodeCore.Runtime.Models{
         public Rect positionInView;
         #endif
         [DisableOnInspector]
+        [HideInBlackboard]
         public string id;
         [NonSerialized]
         private int _fastAccessId=0;
diff --git a/TNode/TNodeGraphViewImpl/Editor/GraphBlackboard/DefaultGraphBlackboardView.cs b/TNode/TNodeGraphViewImpl/Editor/GraphBlackboard/DefaultGraphBlackboardView.cs
index ed707bb..d460b0c 100644
--- a/TNode/TNodeGraphViewImpl/Editor/GraphBlackboard/DefaultGraphBlackboardView.cs
+++ b/TNode/TNodeGraphViewImpl/Editor/GraphBlackboard/DefaultGraphBlackboardView.cs
@@ -35,6 +35,7 @@ namespace TNode.TNodeGraphViewImpl.Editor.GraphBlackboard{
             foreach (var field in data.GetType()
                          .GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)){
                 if(field.GetCustomAttributes(typeof(HideInBlackboard)).Count()!=0) continue;
+        
                 //if the field is MonoBehaviour,add a property field for blackboard 
                 //skip if the field is a list or Ilist
                 if (!typeof(IList).IsAssignableFrom(field.FieldType)&&!field.FieldType.IsArray){