Random time interval to call function

1

what i’m trying to achieve is to be able to create a random time frame betw 1 to 8 seconds before it calls a movie clip from the library.



function layEgg(hens) {
 //set random time in sec
	var timeGap = Math.floor(Math.random()*(8+1))+1;
 
	hens.stop();
	
//converts to milliseconds by * 1000
	var randomness = setInterval(hens,"playAfterRandomInterval", timeGap*1000);
}

//after time interval it should play the frame and call the MC from function placeEgg
hens.playAfterRandomInterval = function() {
	trace("laying egg");
	hens.gotoAndPlay("layeggs");
	placeEgg(hens);
	clearInterval(randomness);
}


//these hens are the MC
this.onEnterFrame= function(){
	if(timeLeft >= 0){
layEgg(henMC1);
layEgg(henMC2);
layEgg(henMC3);
}else{
	delete this.onEnterFrame();
	}
}




	//hens. refers to the henMC
	//parent is where henMC is in
//this function calls the MC from library
	function placeEgg(hens){
	var depth:Number = hens._parent.getNextHighestDepth();
	var egg:MovieClip = hens._parent.attachMovie("eggMC", "eggMC_" + depth, depth);
	}

however the time interval is not working. i managed to trace the random timeGap. any idea?