Bonus time in game

1

if my timer is

var count:Number = 60;


var myTimer:Timer = new Timer(1000,count);


myTimer.addEventListener(TimerEvent.TIMER, countdown);


myTimer.start();


function countdown(event:TimerEvent):void {
    counter.text = String((count)-myTimer.currentCount);

    if(count <= 0){
        myTimer.removeEventListener(TimerEvent.TIMER, countdown);
        myTimer.stop();
        
        
    
}
if (counter.text == String("0")) {
    gotoAndPlay(1);
    }
}

on each good click(on specific movieclip) to add (exc. 3)secounds to timer, and if wrong(other movieclips) to take (exc. 3)secounds of timer.

I’ve tryed, (count+=3); but when i wait to time counts up, it stays on 3, without changing … any help?!

Thanks.
Aleksandar