Problem with translating C# variable to JS.

Hello.

I am putting this code in Standard Assets folder:

 using UnityEngine;
 using System;
 using System.Collections;
 using System.IO;    

 public class ResolutionChanger : MonoBehaviour
 {
         public string fileName = "Settings.ini";
     public float timer;     
   private int screenWidth;
     private int screenHeight;   
     private int fullscreen;    

     void Start()
     {      
         using (StreamReader fileStream = File.OpenText(Path.GetFullPath(fileName)))
         {          
             string fileLine = "";
             while ((fileLine = fileStream.ReadLine()) != null)
             {
                 string option = fileLine.Substring(0, fileLine.IndexOf("="));
                 switch (option)
                 {
                     case "gametime":
                         timer = Convert.ToInt32(fileLine.Substring(fileLine.IndexOf("=") + 1));
                         break;
                     case "screenwidth":
                         screenWidth = Convert.ToInt32(fileLine.Substring(fileLine.IndexOf("=") + 1));
                         break;
 
                     case "screenheight":
                         screenHeight = Convert.ToInt32(fileLine.Substring(fileLine.IndexOf("=") + 1));
                         break;
 
                     case "radius":
                         fullscreen = Convert.ToInt32(fileLine.Substring(fileLine.IndexOf("=") + 1));
                         break;                    
                     }
  
             }           
             fileStream.Close();
         }        
                Screen.SetResolution(screenWidth, screenHeight, false);
     }     

 }

And its working. I have access from text file. But when i try to use the variable "timer" in other JS file, like this:

 private var csScript : ResolutionChanger; 
    
 function Awake()  
 {  
    csScript = this.GetComponent("ResolutionChanger");
 }
 
 var guiScore : GUIText;    
 var myTimer = csScript.timer; 
 
 function Update (){    
         myTimer -= Time.deltaTime;            
     if(myTimer < 0){
         Application.LoadLevel("GameOver");
         }            
 var count : int = myTimer;        
 guiScore.text = " " + count;  
 }

I have an error: NullReferenceException: Object reference not set to an instance of an object Timer..ctor () (at Assets/scripts/Timer.js:10) Whats the problem?