How can I make this function loop?

[b3nman]

So i am trying to build a countdown timer (for building a fitness app).

Here is my code for the very basic timer. I'm trying to use getTimer() because the timer class is not accurate at all. I'm trying to start a looping function with a button. And I'm able to make it fire once, but not repeat. This code was modified from something I found online, so if you think I'm totally in the wrong direction please let me know.

Thanks

var countDownTime:Number = 10;
var startTimeUTC:Number = getTimer() / 1000;
trace(startTimeUTC)
timeText.text = String(countDownTime);
btn1.addEventListener(MouseEvent.CLICK, startTimer);

function startTimer(event:MouseEvent):void
{
	var secondsUTC:Number = getTimer() / 1000;
	var remainingTime:Number = ((startTimeUTC + countDownTime) - secondsUTC); 
	
	if (remainingTime > 0)
	{
	timeText.text = String(Math.round(remainingTime));
	}
	else
	{
	timeText.text = "0"
	}
	
}

[hts5000]

Try this:

var countDownTime:Number = 10;
var startTimeUTC:Number = getTimer()/1000;
trace(startTimeUTC);
timeText.text = String(countDownTime);
btn1.onPress = function() {
    var secondsUTC:Number = getTimer()/1000;
    this.onEnterFrame = function() {
        var remainingTime:Number = ((startTimeUTC+countDownTime)-secondsUTC);
        if (remainingTime>0) {
            timeText.text = String(Math.round(remainingTime));
        } else {
            delete this.onEnterFrame;
            timeText.text = "0";
        }
    };
};

[b3nman]

ahhhh yes i knew i had to put the enterframe listener in there somewhere. thanks!!!!