Game Layer Drag Vertical

Hi All

I am trying to do vertical scrolling, I can do it by setting this->setPosition.y however the ontouchesmoved goes further than the boundary I’ve set then gets stuck. Seen scrollview which has a nice bounceback, but you cant seem to use on purely a gamelayer without setting buttons or content. Looked at Parallax node to and got some code from cpp tests to drag but it doesn’t set any boundaries when you drag it around.

Can anyone help or suggest anything to helping add a drag boundary on touches moved or a nice bounceback when boundary is hit.