Variables changed in EditorWindow script, reverts itself when in playmode

This is only part of code from my custom Editor script

Code (CSharp):

1. using UnityEditor;
2. using UnityEngine;
3.  
4. public class CharacterEdit : EditorWindow
5. {
6.     bool groupEnabled;
7.    
8.     [MenuItem("Window/CharacterEdit")]
9.     public static void ShowWindow()
10.     {
11.         EditorWindow.GetWindow(typeof(CharacterEdit));
12.     }
13.    
14.     void OnGUI()
15.     {
16.         bool enableEdit=true;
17.  
18.         if(enableEdit==true)
19.         {
20.              Selection.gameObjects[0].GetComponent<BaseScript>().headObjectIndex=3;
21.         }
22.      }
23. }

It changes certain variable in selected object's script. Works fine in the editor.
But when I hit play, the variable reverts itself back to "inspector value" of 0. How to save this in the scene Inspector permanently?

 

https://docs.unity3d.com/ScriptReference/EditorUtility.SetDirty.html
or
https://docs.unity3d.com/ScriptReference/Undo.RecordObject.html

 

I've added this two lines above variable changing, yet when I press Play variable once again is 0. No other script is making this variable go to 0.

And the selected object is a Prefab that have this variable set to 0 in Inspector

Code (CSharp):

1. using UnityEditor;
2. using UnityEngine;
3. public class CharacterEdit : EditorWindow
4. {
5.     bool groupEnabled;
6.  
7.     [MenuItem("Window/CharacterEdit")]
8.     public static void ShowWindow()
9.     {
10.         EditorWindow.GetWindow(typeof(CharacterEdit));
11.     }
12.  
13.     void OnGUI()
14.     {
15.         bool enableEdit=true;
16.         if(enableEdit==true)
17.         {
18.             Undo.RecordObject(Selection.gameObjects[0], "variable change");
19.          
20.             Selection.gameObjects[0].GetComponent<BaseScript>().headObjectIndex=3;
21.  
22.             PrefabUtility.RecordPrefabInstancePropertyModifications(Selection.gameObjects[0]);
23.         }
24.      }
25. }

 

You're recording the GameObject. It doesn't change in your use case above.

If line 20 above is the change in question, you need to record changes to the BaseScript instance.

Also, if you have more than one or two dots (.) in a single statement, you're just being mean to yourself.

How to break down hairy lines of code:

http://plbm.com/?p=248

Break it up, practice social distancing in your code, one thing per line please.

 

Wow, I didn't realize that an Object could be a Component.

So yeah, future me, instead of

Code (CSharp):

1. Undo.RecordObject(gameObject, "variable change");

use

Code (CSharp):

1. Undo.RecordObject(gameObject.GetComponent<script>(), "variable change");

Thanks a lot