addEventListener and Event.ENTER_FRAME problem

programming flash
1

I need a little help with because I can’t not see why this is not working. I have a website with several pages, and each page is a flash scene. I also have this var GoToNextScene. And whenever I click at a button to go for a page, I change the GoToNextScene var to the value of that page, reproduce the fading out animation for the current scene, and when it comes to the last frame of the current scene, it should run this code, and it is runing, but for some reason it is not going to the another scene. And if I remove this code and add just the gotoAndPlay, it will work.
Can anyone help me with this?
Thanks.


addEventListener(Event.ENTER_FRAME,myFunction);
function myFunction(event:Event) 
{
 switch (GoToNextScene) 
 { 
   case 0 : 
    this.gotoAndPlay(1, "Intro"); 
    break; 
   case 1 : 
    this.gotoAndPlay(1, "Home"); 
    break; 
   case 2 : 
    this.gotoAndPlay(1, "A Empresa");
    break; 
   case 3 : 
    this.gotoAndPlay(1, "Produtos"); 
    break; 
   case 4 : 
    this.gotoAndPlay(1, "Contactos"); 
    break; 
 }
 
}