[AS3] Game over trouble

Hello there.
Im having trouble with game over in a shooter game.
As soon as hero Hp drops to 0 screen goes dark and on another frame in the main time line.
The dark screen is a movieclip on its own and on its last frame it has this code:



stop();

var main:MovieClip=this.parent as MovieClip;


backtomenuButton2.addEventListener(MouseEvent.MOUSE_DOWN, backtomenubtn2);
function backtomenubtn2(event:MouseEvent):void 
{
    main.gotoAndPlay(1);
    main.progressiveDark.gotoAndPlay(1);
}


On the dark screen there its a button “back to menu”.
All goes ok untill i start a new game from the menu and then enemies wont appear on my screen, but they are there because after some time my life drops.

The enemies are made with timerevent and pushed into arrays.
How can i succesfully restart the game after a game is over?

PS: Im a bit noob with as3.