Another timer question

[Rapidfire107]

I've downloaded a timer from mbenny Link.

This code is on the first frame together with a dynamic instancename called "textbox".

onEnterFrame = function () {
	time = getTimer();
	miliseconds = time;
	minutes = Math.floor(miliseconds/1000/60);
	miliseconds -= minutes*1000*60;
	seconds = Math.floor(miliseconds/1000);
	miliseconds -= seconds*1000;
	miliRound = Math.round(miliseconds/10);
	min = (minutes<10 ? "0" : "")+minutes;
	sec = (seconds<10 ? "0" : "")+seconds;
	ms  = (miliRound<10 ? "0" : "")+miliRound;
	textbox.text = min+":"+sec+":"+ms;
		};

I've put this source into a mc, and it works perfectly.
But now i tried everything i know to reset the timer to 0, and begins counting again. It just won't work, or i get nothing to see at all in the dynamic textbox.
Could anyone help me out here?
Thanks in advance