How do I make a camera zoom controlled by a mouse wheel?

For my game i want my camera to move over the map and zoom in and out. But isnit even possible?

To make the camera move use the scroll to position action.

To change the layout scale use the set layout scale action.

Here's an example of using both for camera movement:

dropbox.com/s/j6lqgzvcdh8evdo/cameraMovement.c3p

thank you really much that was exatly what i was trying to create.