Mobile Gesture Event- Pan Event(Problem)

AS3-mobile

I want move my picture with single finger not two finger.
that coding provide with multitouch function to work but i need move with single finger.

Any solution for this. Need for help.

coding:

Multitouch.inputMode = MultitouchInputMode.GESTURE;

Picture.addEventListener(TransformGestureEvent.GESTURE_PAN, fl_PanHandler_2);

function fl_PanHandler_2(event:TransformGestureEvent):void

{

          event.currentTarget.x += event.offsetX;

          event.currentTarget.y += event.offsetY;

}