Kind of Patrol AI with Point A and B Help

Ok so i use the script below to have a game object move itself from Point A to Point B and possibly then back and start all over again just like a patrol AI script. The thing is that something in my function Patrol(){ prevents it from moving back to Point A. It looks at it back doesn't move to it. What am i doing wrong? Also, is there a simpler way than this to make that function from Point A to Point B and then back? Thanks.

 var player : Transform;
 var PointA : Transform;
 var PointB : Transform;
 var controller : CharacterController;
 var speed : float;
 var range : float;
 var roar : AudioClip;
 var soundplayed : boolean;
 
 function Start(){
     soundplayed = false;
 }    
 
 function Update(){
     Debug.Log(Vector3.Distance(transform.position, PointB.position));
     if(InRange()){
         if(!soundplayed){
             audio.PlayOneShot(roar);
             soundplayed = true;
         }
         GoToPlayer();        
     }
     else{
         Patrol();
     }    
 }                    
 
 function InRange(){
     if(Vector3.Distance(transform.position, player.position) < range){
             return true;
         }
         else{
             return false;
         }
 }
 
 function GoToPlayer(){
     transform.LookAt(player.position);
     controller.SimpleMove(transform.forward * speed);
 }
 
 function Patrol(){
     if(Vector3.Distance(transform.position, PointB.position) > 2){
         transform.LookAt(PointB.position);
         controller.SimpleMove(transform.forward * speed);
         if(Vector3.Distance(transform.position, PointB.position) < 2){
             transform.LookAt(PointA.position);
             controller.SimpleMove(transform.forward * speed);
         }
     }
 }