the wizard has, if i am right, an action.
in this action the entity pointer "me" is valid for the model which has the action assigned.
In this action the function camera_follow is called. It overgives the pararmeter which entity should be followed. That means, if an action calls camera_follow and overgives the me/my parameter the camera will follow the entity
camera_follow(me); //in the action of the model which the camera should fllow