   open var showBlackOverlay: Bool = true
   open var highlightFromView: Bool = false
   open var highlightCornerRadius: CGFloat = 0
+  open var springDamping: CGFloat = 0.7
+  open var initialSpringVelocity: CGFloat = 3
+
 
   // custom closure
   open var willShowHandler: (() -> ())?

    self.transform = CGAffineTransform(scaleX: 0.0, y: 0.0)
	self.willShowHandler?()
    UIView.animate(withDuration: self.animationIn, delay: 0,
      usingSpringWithDamping: 0.7,
      initialSpringVelocity: 3,
      options: UIViewAnimationOptions(),
      animations: {
        self.transform = CGAffineTransform.identity

          self.dismissOnBlackOverlayTap = value
        case let .showBlackOverlay(value):
            self.showBlackOverlay = value
        case let .springDamping(value):
            self.springDamping = value
        case let .initialSpringVelocity(value):
            self.initialSpringVelocity = value
        }
      }
    }
