Problem with an error.

I'm having a scoping problem in my code. I don't understand why though.

Code (CSharp):

1.  
2. using UnityEngine;
3. using UnityEditor;
4. using System.Collections;
5.  
6. [CustomEditor(typeof(Grid))]
7. public class GridEditor : Editor
8. {
9.     Grid grid;
10.  
11.     void OnEnable()
12.     {
13.         grid = (Grid)target;
14.     }
15.  
16.     public override void OnInspectorGUI()
17.     {
18.         //base.OnInspectorGUI ();
19.  
20.         GUILayout.BeginHorizontal ();
21.         GUILayout.Label ("Grid Width");
22.         grid.width = EditorGUILayout.Slider (grid, width, 1f, 100f, null);
23.         GUILayout.EndHorizontal ();
24.     }
25.  
26.  
27. }

The error is on line 22. The compiler is having a problem with my width variable for the slider. The slider takes 5 arguments 4 floats and an instruction. Now In another script i have defined width as a float. I thought that i brought in my other script into this one by doing Grid grid; So the scope should work. The exact error is width doesn't exist in this context. Any suggestions on why it's not reading my width?

 

Figured it out. i had a typo. should have been gird.width = EditorGUILayout.Slider(gird.width, 1f,100f,null);