AS problem

programming flash
1

I’m making an ambient banner, of bubbles for my site…It’s randomly scrippted, the bubbles travel from bottom to top, then they pop…here is the AS i used:


numBubbles = 6;
for (i=2; i<numBubbles; i++){
	bubbles.duplicateMovieClip("bubbles" add i, i+100);
	
}



//make it random
onClipEvent (load) {
	function reset() {
		//random alpha
        this._alpha = random(100)+25
		this._y = 120;
		//random X loc
		this._x = Math.floor(Math.random() * (580 - 20)) + 20;
		//random speed
		enemySpeed = random(6)+1;
		this.gotoAndStop(1);
		//random Y pop loc
		pop = Math.floor(Math.random() * (60 - 20)) + 20;
		//random bubble size
		bubSize = Math.floor(Math.random() * (5 - 1)) + 1;
		if(bubSize == 1) {
			this._xscale = 100;
			this._yscale = 100;
		}
		else if(bubSize == 2) {
			this._xscale = 80;
			this._yscale = 80;
		}
		else if(bubSize == 3) {
			this._xscale = 60;
			this._yscale = 60;
		}
		else if(bubSize == 4) {
			this._xscale = 40;
			this._yscale = 40;
		}
		
	}
	reset();
}
//float
onClipEvent (enterFrame) {
	
	//speed
	this._y -= Math.round(enemySpeed);
	//if statements
	if (this._y <= 0) {
		reset();
	}
	if (this._y <= pop) {
		this.gotoAndPlay(2);
	}
}

I have a pop sound on the second key frame of the bubble MC, the problem is when the bubble hits the pop Y position, it continues to make the pop noise until the function resets, i don’t know how to only make it play once…

here is the .fla