1180: Call to a possibly undefined method Con2

import com.greensock.*;

import com.greensock.easing.*;

Multitouch.inputMode = MultitouchInputMode.GESTURE;

var bigCon2:Sprite = new Sprite();

stage.addChild(bigCon2);

var ccon2:MovieClip = new Con2();

bigCon2.addChild(ccon2)

bigCon2.x=0

bigCon2.y=0

stage.addEventListener(TransformGestureEvent.GESTURE_SWIPE , onSwipe2);

function onSwipe2 (e:TransformGestureEvent):void{

if (e.offsetY == 1) {

//User swiped towards bottom

          TweenMax.to(bigCon2, 1, { y:bigCon2.y+500, ease:Sine.easeOut});

}

if (e.offsetY == -1) {

//User swiped towards top

          TweenMax.to(bigCon2, 1, { y:bigCon2.y-500, ease:Sine.easeOut});

}

}

im not sure why im getting this error.. it worked well for my other script though..