[F8] Countdown Timer Triggers and Event...possible?

[PONYACK]

Hi,

I have a timer counting down.

When it hits :30 I need a warning sound and message.

Not sure how to do this. I thought some kind of listener

Below is the code

Thanks

function countDown() {
	if (Math.round(outputMin)==0 && Math.round(outputSec)==0 || chk==1){
		clearInterval(timer);
	}else {
		if (outputSec != "00") {
			outputSec = Math.round(outputSec) - 1;
			//trace(output);
		}else {
			outputSec = 59;
			outputMin = Math.round(outputMin) -1;
		}
		if (outputSec <= 9 && outputSec > 0) {
			outputSec ="0" + outputSec;
	
		}else if (outputSec == 0) {
			outputSec = "00";
			gotoAndPlay(3);
		}
	}
}

chk=0;
stop();