About current frame property

Question

Hello I am trying to make as3 take action when a certain frame is reached. As far as I understand I need to use current frame property. But it does not work for some reason. It is about as. file so my object is referred to as "this". 
if (this.hitTestObject(_root.mcBall)){
    _root.ballYSpeed *= -1
    if(!hit){      
        hit = true
        this.gotoAndStop(2)
    } else {      
        this.gotoAndStop(3)
  removeEventListener(Event.ENTER_FRAME, enterFrameEvents);
_root.brickAmt --;
I have animation playing inside frame 3 at the end of which goes to (parent) frame 4. How can I tell it if the current frame is 4 to do  _root.brickAmt --;  At this point? Is there another command I can use?
Thanks!

Answer 1

Yes I am sorry.... tried that 1 week ago..... Its the most logical solution and it would not work......Can I put "if" statement after "if" "else??...... This is the whole code. and the _root.brickAmt--; at the end is not responding....If I don't have   if (this.currentFrame == 4)... It works. May I ask why?
public class Sinote extends MovieClip {
  private var _root:MovieClip;
  public function Sinote(){
  addEventListener(Event.ADDED, beginClass);
  addEventListener(Event.ENTER_FRAME, enterFrameEvents);
  private function beginClass(event:Event):void{
  _root = MovieClip(root);
  _root.brickAmt ++;
  private function enterFrameEvents(event:Event):void{
  if (this.hitTestObject(_root.mcBall)){ 
              _root.ballYSpeed *= -1 
             if (this.currentFrame == 1){   
        this.gotoAndStop(2)
        } else {                     
        this.gotoAndStop(3)
  if (this.currentFrame == 4){
  removeEventListener(Event.ENTER_FRAME, enterFrameEvents);
  _root.brickAmt --;