I found out that had to use Arrays of course.

var Nummer = new Array(1,2,3,4);
randomNum = random(Nummer.length);
//////
texter.gotoAndStop(randomNum);
trace("numbers left:" + Nummer);

I tried to delete the numbers inside the Array with this:

t1.onRelease = function(){
delete _parent.Nummer[1];
_parent._parent.gotoAndPlay(1);
}

But it did not work.
Anyone see what´s wrong?

/Mattias