So, my next problem. Sorry for asking so much, but my teacher doens't respond. So, this doesn't work. The stop command doesn't seem too respond, but i don't get an error either. I know i miss a bracket, but my function isn't finished. Due to copy and paste the place of the brackets have shifted a bit.

function Knipperen (event:TimerEvent):void 
{
    if (event.currentTarget.currentCount == 3 && geknipperd < 3) 
    {
    geknipperd ++;
    timer.reset();
    timer.start();
    trace (geknipperd);
    gotoAndPlay(1);

    if (currentFrame == 13) 
    {
        stop();
    }
}