Getting a variable from a GameObject inside a 2d array?

Hi there!

I'm pretty sure that I'm doing this wrong, but thanks for taking a moment to look at my question:

I have a 2d array of game objects which each have a script on them that is storing 2 variables, Blocked and Block_sight.

I can fill the array just fine, and even instantiate from the objects in that array, however, for the life of me, I cannot seem to be able to pull the variables up no matter what I try.

Any help would be appreciated:

 var myself : GameObject;
 var blocked : boolean;
 var block_sight : boolean;
 
 //This is the funtion on the objects that creates the array
 function Makemap()
     {
         blocked = false;        //this is the variable I'm trying to call
         block_sight = false;
         myself = this.gameObject;
         for(y in range(GameObject.Find("WorldGenerator").GetComponent(CreateWorld).mapHeight))
         {
             for(x in range(GameObject.Find("WorldGenerator").GetComponent(CreateWorld).mapWidth))
             {
                 GameObject.Find("WorldGenerator").GetComponent(CreateWorld).map[x,y] = myself;
             }
         }
     }    

 var map : GameObject[,];
 var isBlocked : boolean;
 
 // And this is the function that checks (for now) if the x, y coordinate in the array has a true blocked value
 
 function Update () {
     isBlocked = map[x,y].blocked;
     Debug.Log("is this a blocked tile?" + isBlocked );
 }

I get the following error when I run the game:

 NullReferenceException: Object reference not set to an instance of an object
 Boo.Lang.Runtime.RuntimeServices.CheckNumericPromotion (IConvertible convertible)
 Boo.Lang.Runtime.RuntimeServices.CheckNumericPromotion (System.Object value)
 Boo.Lang.Runtime.RuntimeServices.UnboxBoolean (System.Object value)
 CreateWorld.Update () (at Assets/Scripts/CreateWorld.js:34)