         
         self.gesture = UIPanGestureRecognizer(target: self, action: "handlePan:")
         self.gesture!.delegate = self
+        self.gesture!.maximumNumberOfTouches = 1
         
         if let _gestureTargetView = self.gestureTargetView {
             _gestureTargetView.addGestureRecognizer(self.gesture!)

    
    // interactive gesture
    
    public weak var gestureTargetView : UIView?
    public var panCompletionThreshold : CGFloat = 100.0
    public var direction : ARNTransitionAnimatorDirection = .Bottom
    public var contentScrollView : UIScrollView? {

                animationRatio = (location.x - self.panLocationStart) / CGRectGetWidth(bounds)
            }
            
            if animationRatio < 0 {
                animationRatio = 0
            }
            
            if let _contentScrollView = self.contentScrollView {
                if self.isTransitioning == false && _contentScrollView.contentOffset.y <= 0 {
                    self.startGestureTransition()
                    self.contentScrollView!.bounces = false
                } else {
                    self.updateInteractiveTransition(animationRatio)
                }
            } else {
                self.updateInteractiveTransition(animationRatio)
            }
