WebBanner Pause at 30sec

[lbweb]

I'm trying to build a web banner using TweenNano but one of the requirements is that the ad has to stop animating after 30secs.
 
I've been trying to implement the code, but I keep getting errors and I'm not a seasoned enough flash developer to know what the deal is:

import com.greensock.*;
import com.greensock.easing.*;

import flash.events.MouseEvent;
import flash.net.URLRequest;

var animateTxt = function begin():void {
		TweenNano.to(seeOthers, 1.5, {alpha:1, delay: 0, ease:Quad.easeInOut});
		TweenNano.to(seeOthers, 1.5, {alpha:0, delay:3, ease:Quad.easeInOut});
		TweenNano.to(shouldBe, 1.5, {alpha:1, delay:4.5, ease:Quad.easeInOut});
		TweenNano.to(shouldBe, 1.5, {alpha:0, delay:7.5, ease:Quad.easeInOut, onComplete:begin});
	}

animateTxt();

	
var timer:Timer = new Timer(30000, 1);
timer.addEventListener(
  TimerEvent.TIMER,
  function(evt:TimerEvent):void {
	  trace('timer launched');
	  animateTxt.pause();
  }
);

startBtn.addEventListener(MouseEvent.CLICK, onStart);
function onStart(e:MouseEvent):void {
	animateTxt.play();
	}

timer.start();

stop();

Any help would be GREATLY appreciated

[Carl]

please try TweenNano.killTweensOf() 

 

function(evt:TimerEvent):void {
 trace('timer launched');
 TweeNano.killTweensOf(seeOthers)
 TweeNano.killTweensOf(shouldBe)
  }