Custom editor window resets array

Dear community!

tl:dr - This here code resets my vars hwen changing Selection.activeGameObject to something else, aaaarrr!

I wanted to do a custom window to fiddle with my arrays in editor. After 3 days of struggling , i gave up and started simple. This is the code i gave birth to:

first file, with editor code:

     // Display things and do things while MapEditor in scene is selected:
     var arrayOfHoles = new Array();
     var groupEnabled = false;
     var targetObject : GameObject;
     
 class MapGeneratorEditorDisplay extends EditorWindow 
 {
  var selection : boolean;
  var cloneTimesX : int = 1;
  var prevVar : int;
 
  @MenuItem ("Window/MapGeneratorInfo")
  static function ShowWindow () 
  {    
   EditorWindow.GetWindow (MapGeneratorEditorDisplay);
  }
 
  function OnGUI () 
  {
   GUILayout.Label ("Base Settings");
   var obj = Selection.activeGameObject;
    if(obj)
    {    
     if(obj.transform.name.ToString() == "MapGenerator")
     {    
     var objScript : randomCubeGen =  obj.transform.GetComponent("randomCubeGen");
     if(objScript)
      {
       cloneTimesX = objScript.nrOfHoles;
       EditorGUILayout.LabelField("Object: ",obj.transform.name.ToString());
       EditorGUILayout.LabelField(" ","");
       cloneTimesX = EditorGUI.IntSlider(Rect(5,40,position.width, 20), cloneTimesX, 0, 10);
       objScript.nrOfHoles = cloneTimesX;
       if(prevVar!=cloneTimesX)
       {            
        objScript.test();
        prevVar = cloneTimesX;    
       }
       for(i=0; i< cloneTimesX; i++)
       {    
        arrayOfHoles[i] = 1;
        var r : Rect = EditorGUILayout.BeginVertical();
        var rx : Rect = EditorGUILayout.BeginHorizontal ("Button");
        EditorGUILayout.LabelField("hole: ", i.ToString());
        var posX : int = objScript.holesXs[i];
        var posY : int = objScript.holesYs[i];
        posXType = EditorGUILayout.IntField("X:",posX);
        posYType = EditorGUILayout.IntField("Y:",posY);
        objScript.holesXs[i] = posXType;
        objScript.holesYs[i] = posYType;
        EditorGUILayout.EndHorizontal ();
        EditorGUILayout.EndVertical();
       }
     }    
     }
     }
     else
     {
     selection = true;
     }
     this.Repaint();
     }
     }

---

Second file : the file with the variables:

 var nrOfHoles : int ;
     var holesXs :int[];
     var holesYs :int[];
 
 function test()
 {
     if(!holesXs)
     {
        print("made new array");
        holesXs = new int[nrOfHoles];
        holesYs = new int[nrOfHoles];
     }
     else if(holesXs)
     {
        var tempXs = new Array (holesXs); // copy to temp array
        var tempYs = new Array (holesYs);
        holesXs = new int[nrOfHoles]; // clean new array +1 to length
        holesYs = new int[nrOfHoles];
         
        //print(tempXs.length +" "+holesXs.length); 
         
        if(tempXs.length<holesXs.length)
        {
         for(i=0; i<tempXs.length ; i++)
         {
             holesXs[i] = tempXs[i];
             holesYs[i] = tempYs[i];
         }
        }
        else if(tempXs.length>holesXs.length)
        {
         for(i=0; i<holesXs.length ; i++)
         {
             holesXs[i] = tempXs[i];
             holesYs[i] = tempYs[i];
         }
        }
         
        }
 }

First file goes wherever. Second file goes to Editor folder. Keep file name: "MapGeneratorEditorDisplay" in order to prevent errors.

Now the idea was to get a variable(multidim array) and display it in custom window to add and subtract at ease. That didnt happen, because i couldn't find any info on arrays. Docs are, well, in this case a white hole of nothing), and after a good amount of frustration i gave up and tried this approach.

All is great, but when i deselect my object with the second script, after selecting anotherone the vars are reset. But when i deselect one object and select it , the vars stay the same.

I just dont know where is the reset vars problem in here. Anyone wants to give this a try?

sorry for the formating, but pasting from monodevelop is not as simple as one would think.