fliping texture through script issue

here is a script that i grabed from the web and then modified to make it flip the texture when it changes direction the thing is it doesnt flip

any ideas?

 #pragma strict
 
 var dir : int;
 
 var SwitchTime : float;
 
 var hSpeed : float;
 
 var X: float ;
 
 X = -12;
 
 
 
 function Start(){
 X = transform.localScale.x;
 }
 
 
 
 function Update () {
 
 if(dir == 1) 
  {
     GoRight();
  }
  
  if(dir == 2) 
  {
     GoLeft();
  }
 
 
 }
  function GoRight()
   {
     this.gameObject.transform.position.x += hSpeed * Time.deltaTime;
     yield WaitForSeconds(SwitchTime);
     dir = 2;
   }
   if (GoRight){
       transform.localScale.x = X;
  }
   
  
  function GoLeft()
   {
     this.gameObject.transform.position.x -= hSpeed * Time.deltaTime;
     yield WaitForSeconds(SwitchTime);
     dir = 1;
   }
   
    if (GoLeft){
       transform.localScale.x = -X;
   }