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diff --git a/源代码/.Net Framework/Stg_Sharp/.vs/Stg_Sharp/v17/.suo b/源代码/.Net Framework/Stg_Sharp/.vs/Stg_Sharp/v17/.suo
index bb4b42df..524b12ba 100644
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diff --git a/源代码/.Net Framework/Stg_Sharp/Debug/Program.cs b/源代码/.Net Framework/Stg_Sharp/Debug/Program.cs
index 29ae4812..860d40ad 100644
--- a/源代码/.Net Framework/Stg_Sharp/Debug/Program.cs	
+++ b/源代码/.Net Framework/Stg_Sharp/Debug/Program.cs	
@@ -14,10 +14,7 @@ namespace Debug
     {
         public static void Main()
         {
-
-            int b = A.a;
-            A.a = 10;
-
+            A a=new A();
         }
 
 
@@ -27,6 +24,23 @@ namespace Debug
     public class A
     {
         public static int a = 10; 
+        public int b = 10;
+    }
+
+    static class b
+    {
+        public static void change(this A a, int b)
+        {
+            a.b = b;
+        }
+    }
+
+    static class c
+    {
+        public static void change(this A a, int b)
+        {
+            a.b = b++;
+        }
     }
     
 
diff --git a/源代码/.Net Framework/Stg_Sharp/Stg_Sharp/UI/Option.cs b/源代码/.Net Framework/Stg_Sharp/Stg_Sharp/UI/Option.cs
index 8ef1a9f1..85195d65 100644
--- a/源代码/.Net Framework/Stg_Sharp/Stg_Sharp/UI/Option.cs	
+++ b/源代码/.Net Framework/Stg_Sharp/Stg_Sharp/UI/Option.cs	
@@ -17,9 +17,30 @@ namespace StgSharp.UI
             add { this.selectEventHandler += value; }
             remove { this.selectEventHandler -= value; }
         }
+
+        internal float[] textureLocation;
+
+
+
+
+        internal float[] highLightlocation = new float[4] ;
+
+        public float[] HighLightTextureLocation
+        {
+            get { return highLightlocation; }
+            set 
+            {
+                if (value.Length == 4)
+                {
+                    highLightlocation = value;
+                }
+                else throw new ArgumentException("Too much or too few data is provided");
+            }
+        }
+
         public void HighLight()
         {
-
+            this.textureLocation = highLightlocation;
         }
 
         public void LowLight()