Variable Changes Not Saving

I'm about to go insane PLEASE can someone help me. I'm trying to make a simple editor script (And I admit I'm not amazing at editor scripting but I think this is pretty simple), the problem is that after I've made changes to it they reset (as in the list goes back to null) when playing or editing the scripts. I've searched on the internet and the only answer I've found is using SetDirty() which does nothing. Here are my scripts.

LevelHandlerEditor.cs

Code (CSharp):

1. using UnityEngine;
2. using UnityEditor;
3. using System.Collections;
4. using System.Collections.Generic;
5.  
6. [CustomEditor(typeof(LevelHandler))]
7. public class LevelHandlerEditor : Editor {
8.    
9.     public override void OnInspectorGUI()
10.     {
11.         LevelHandler lh = (LevelHandler)target;
12.        
13.         if (lh.levels == null) {
14.             lh.levels = new List<Level>();
15.         }
16.        
17.         /// Add / Remove Levels (Buttons) ///
18.         EditorGUILayout.BeginHorizontal();
19.         if (GUILayout.Button("Remove"))
20.             lh.levels.RemoveAt(lh.levels.Count - 1);
21.         if (GUILayout.Button("Add")) {
22.             lh.levels.Add(new Level());
23.             lh.levels[lh.levels.Count - 1].sceneName = "Level " + lh.levels.Count;
24.         }
25.         EditorGUILayout.EndHorizontal();
26.         ///
27.        
28.         foreach(Level l in lh.levels) {
29.             EditorGUILayout.BeginHorizontal();
30.             l.editorToggle = EditorGUILayout.Foldout(l.editorToggle, "");
31.             //GUILayout.Space(-100f);
32.             l.sceneName = EditorGUILayout.TextField(l.sceneName);
33.             EditorGUILayout.EndHorizontal();
34.            
35.             if (l.editorToggle) {
36.                 EditorGUI.indentLevel++;
37.                 l.scene = (GameObject) EditorGUILayout.ObjectField("Scene", l.scene, typeof(object), true);
38.                
39.                 /// Stars ///
40.                 l.editorStarToggle = EditorGUILayout.Foldout(l.editorStarToggle, "Star Requirements");
41.                 if (l.editorStarToggle) {
42.                     EditorGUI.indentLevel++;
43.                    
44.                     for (int i = 0; i < 3; i++) {
45.                         l.stars[i] = EditorGUILayout.IntField("star " + (i + 1).ToString(), l.stars[i]);
46.                     }
47.                    
48.                     EditorGUI.indentLevel--;
49.                 }
50.                 ///
51.                
52.                 EditorGUILayout.Space();
53.                
54.                 l.cameraOffset = EditorGUILayout.Vector3Field("Camera Offset", l.cameraOffset);
55.                
56.                 EditorGUI.indentLevel--;
57.             }
58.         }
59.        
60.         EditorGUILayout.Separator();
61.         if (GUILayout.Button("Save Changes"))
62.             EditorUtility.SetDirty(lh);
63.     }
64. }

LevelHandler.cs

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4.  
5. public class LevelHandler : MonoBehaviour{
6.     public List<Level> levels;
7. }
8.  
9. public class Level {
10.     public string sceneName;
11.     public GameObject scene;
12.     public int[] stars = new int[3];
13.     public Vector3 cameraOffset;
14.    
15.     // Editor Variables
16.     public bool editorToggle;
17.     public bool editorStarToggle;
18. }

 

Thank You! It works although only if it's not derived of monobehaviour is there any way to do this whilst having it derived of monobehaviour?

 

I mean this:

Code (CSharp):

1. [System.Serializable]
2. public class LevelHandler {
3.     public List<Level> levels;
4. }

works, but this:

Code (CSharp):

1. [System.Serializable]
2. public class LevelHandler : MonoBehaviour {
3.     public List<Level> levels;
4. }

doesn't.

But with the first example I get an error in my editor script because of this line of code

Code (CSharp):

1. LevelHandler lh = (LevelHandler) target;

because it can't cast from LevelHandler to Object.

this would require me to redo my entire editor script if I'm correct (if I have to I will) but I would also like to add additional functionality to the LevelHandler class which would require it to be derived of monoDevelop.

 

I feel so dumb now...

You're a legend, thanks so much. It's working perfectly.