# Help Countdown Timer

**URL:** <https://forum.kirupa.com/t/help-countdown-timer/294607>\
**Category:** flash\
**Created:** [August 17, 2009, 2:45pm UTC](https://forum.kirupa.com/t/help-countdown-timer/294607 "2009-08-17T14:45:22Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![gk\_interactive](https://avatars.discourse-cdn.com/v4/letter/g/e47774/32.png) [@gk\_interactive](https://forum.kirupa.com/u/gk_interactive)\
**Post date:** [August 17, 2009, 2:45pm UTC](https://forum.kirupa.com/t/help-countdown-timer/294607/1 "2009-08-17T14:45:22Z")

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Hi there, I want to add a millisecond field into this code but not sure how, can anyone assist?

var my\_format:TextFormat = new TextFormat();  
var start = getTimer();  
var countdown = “60:00”;  
var textbox = this.createTextField(00, 00, 250, 175, 200, 300);  
textbox.variable = “countdown”;  
var runit = function () { var diff = (getTimer()-start)/1000;  
var mins = 60±Math.floor(diff/60);  
var secs = 60-Math.floor(diff%60);  
var msecs = 1000-Math.floor(diff%60);  
countdown = mins+":"+secs;  
if (countdown == “00:00:00”) {trace(“time’s up”);  
clearInterval(timer);}  
};  
var timer = setInterval(runit, 1000);