     fileprivate var rightContainerOffset: CGVector!
     
     // setting them to NO disables swiping to the view controller, try it!
-    open var shouldshowTopViewController = true
+    open var shouldShowTopViewController = true
     open var shouldShowBottomViewController = true
     open var shouldShowLeftViewController = true
-    open var shouldShowRightviewController = true
+    open var shouldShowRightViewController = true
+    open var shouldShowCenterViewController = true
     
     fileprivate let swipeAnimateDuration = 0.2
     

    // Append embedded view to container view's view hierachy
    open var topViewController: UIViewController? {
        willSet(newValue) {
            self.shouldshowTopViewController = newValue != nil
            guard let viewController = newValue else {
                return
            }

    }
    open var rightViewController: UIViewController? {
        willSet(newValue) {
            self.shouldShowRightViewController = newValue != nil
            guard let viewController = newValue else {
                return
            }
