Placing Small Lever Into Mount

[SonOfLiberty796]

I wanted to do a quick puzzle where the player has to find the small lever and place it onto the mount and when he pulls it up, a shelf opens up.

I don't know how to make the small lever appear on the mount once the player brings it. I also forgot how to enable a function if the lever is pulled up/down (If I remember, I think it had something to do with "alState" being 1 or -1?) I already know how to open the shelf, so no worries there.

Please help!!