How Do I make my character move?

So I have a button which is suposed to when held move character right. So here's the code

 var tr : Transform;
 var rb : Rigidbody2D;
 var right = true;
 var left = true;
 
 function Start() {
 
 }
 
 
 function FixedUpdate () {
     tr.transform.Rotate(0, 0, -1);
 
 }
 
 function buttonUpr(){
     if(right == false){
     rb.AddForce(Vector2(-300, 0));
     }
     right = true;
 }
 function buttonDownr(){
     if(right == true){
      rb.AddForce(Vector2(300, 0));
     }
     right = false;
 }

And i bind ButtonDownr to event trigger pointer down and ButtonUpr to pointer up plz help (the script is bound to the ball)