Progress on a touch sliding menu, but stil not working 100%

I have made some progress since I last asked for help on this, but seems that I’m not 100% sure I have the right formula to make this work. Any help would be greatful!

my code:
home.homeContent.addEventListener(TouchEvent.TOUCH_BEGIN , onTouch);

private function onTouch(event:TouchEvent):void
{
localYTxt.text = String("localY "+ event.localY);
stageYTxt.text = String("stageY "+ event.stageY);
touchPointTxt.text = String("touchPointID "+ event.touchPointID);
//move
home.homeContent.addEventListener(TouchEvent.TOUCH_MOVE, onTouchMove);
//end
home.homeContent.addEventListener(TouchEvent.TOUCH_END , onTouchEnd);
}
private function onTouchMove(event:TouchEvent):void
{
touchMoveTxt.text = String("stageY "+ event.stageY);
home.homeContent.y+= (event.localY-home.homeContent.y)/3;
}
private function onTouchEnd(event:TouchEvent):void
{
localYEndTxt.text = String("localY "+ event.localY);
stageYEndTxt.text = String("stageY "+ event.stageY);
touchPointEndTxt.text = String("touchPointID "+ event.touchPointID);
home.homeContent.removeEventListener(TouchEvent.TOUCH_MOVE, onTouchMove);
home.homeContent.endEventListener(TouchEvent.TOUCH_END , onTouchEnd);

}