NullReferenceException: Object reference not set to an instance of an object

i am creating a game in which when i click two similar tiles, these tiles disappear. However, the error message "NullReferenceException: Object reference not set to an instance of an object" is appearing.

I have this code for one tile:

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class Script11 : MonoBehaviour {
5.  
6.     public bool var;
7.    
8.     // Update is called once per frame
9.     void onMouseDown () {
10.    
11.         var = true;
12.     }
13. }
14.  

while this is the other code

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class Script00 : MonoBehaviour {
5.    
6.     void OnMouseDown()
7.     {
8.                 Script11 otherScript = GetComponent<Script11> ();
9.                 if (otherScript.var = true) {
10.  
11.                         Destroy (this.gameObject);
12.                 }
13.         }
14.  
15. }

PLEASE HELP! thanks in advance =)

 

dont call your bool var. name it something else.

 

Also, Google is your friend. This question has been posted and answered many times before.

 

are those two scripts on separate objects? i assume so. your using getcomponent<script11> in the script00. if theyre on separate objects, this wont work as getcomponent will get components will only get a component within the same object as the script that called it. (when used that way). you could store a reference to the script11's gameobject in script00, and then use something like: script11gameobject.GetComponentblahblah

so you may be getting a null reference because your trying to access a component that doesnt exist in that context.

what line does the error show up on specifically?

 

oh, this will explain var in c# http://msdn.microsoft.com/en-us/library/bb383973.aspx

 

http://bit.ly/UmaH1o

 

needs to be a capital O as well

 

This is so brilliant!!!