I don't know how to boulder

Ok So I'm making a pokemon game and I want to include a "strength puzzle" where you push a boulder down a hole and walk over it but I'm a total newbie. Can anyone help me with the event needed? I would really appreciate it...

Look at the Cave Example Map on Route 7, it shows how it's done.

Well it doesn't show what I'm asking for. I know how to make a push-able boulder I just don't know how to push it into a hole to allow the player to walk over it.

Than just add a second Page on the Hole-Event, that has the "Filled Hole"-Graphic and doesn't transfer the Player if he touches it. It just has to have the particular game switch as a condition.