Whenever I use this function, My screen goes white. 

i got code now so thats cool 

if(Sup.Input.isKeyDown("RIGHT") && turncoin > 0){ 
        let orientation = new Sup.Math.Quaternion(0, 0, 90, 0);
        this.actor.setOrientation(orientation);
        stage = "static";
        turncoin =  turncoin - 25;
      }