diff --git a/TNode/Editor/GraphBlackboard/GraphBlackboard.cs b/TNode/Editor/GraphBlackboard/GraphBlackboard.cs
index 2ade88a..40b9e3d 100644
--- a/TNode/Editor/GraphBlackboard/GraphBlackboard.cs
+++ b/TNode/Editor/GraphBlackboard/GraphBlackboard.cs
@@ -1,10 +1,12 @@
-using UnityEditor.Experimental.GraphView;
+using TNode.Models;
+using UnityEditor.Experimental.GraphView;
 
 namespace TNode.Editor.GraphBlackboard{
     /// <summary>
     /// Implement this class to create graph black board for specified graph
     /// </summary>
-    public class GraphBlackboard:Blackboard{
+    public class GraphBlackboard<T>:Blackboard where T:BlackboardData{
+        public T BlackboardData;
         
     }
 }
\ No newline at end of file
diff --git a/TNode/Models/BlackDragNodeData.cs b/TNode/Models/BlackDragNodeData.cs
new file mode 100644
index 0000000..6038a6f
--- /dev/null
+++ b/TNode/Models/BlackDragNodeData.cs
@@ -0,0 +1,12 @@
+using Newtonsoft.Json;
+using TNode.Attribute.Ports;
+
+namespace TNode.Models{
+    public class BlackDragNodeData<T>:NodeData{
+        [JsonIgnore]
+        private string _blackDragData;
+        [JsonIgnore]
+        private BlackboardData _blackboardData;
+        
+    }
+}
\ No newline at end of file
diff --git a/TNode/Models/BlackDragNodeData.cs.meta b/TNode/Models/BlackDragNodeData.cs.meta
new file mode 100644
index 0000000..fd3d40d
--- /dev/null
+++ b/TNode/Models/BlackDragNodeData.cs.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: f6434bdf404f4ee892274b61db24d0f8
+timeCreated: 1656943697
\ No newline at end of file
diff --git a/TNode/Models/BlackboardData.cs b/TNode/Models/BlackboardData.cs
index f1ca512..5d60568 100644
--- a/TNode/Models/BlackboardData.cs
+++ b/TNode/Models/BlackboardData.cs
@@ -1,13 +1,6 @@
-using System;
-using System.Collections.Generic;
-using UnityEngine;
+namespace TNode.Models{
 
-namespace TNode{
-    [Serializable]
     public class BlackboardData{
-        public SortedList<string, MonoBehaviour> Behaviours;
-        public SortedList<string, float> Floats;
-        public SortedList<string, int> Ints;
-        public SortedList<string, string> Strings;
+        
     }
 }
\ No newline at end of file