I'm creating a secret passage via a bookshelf. I have made the bookshelf an openable/closable container and a closed container both on separate occasions. I then made an "in" exit to the secret passage. However, whenever I try to reach the passage, it says "You can't go in there." I've tried exits to other rooms via the bookshelf, but it won't go anywhere. Is there something I'm missing?

You need to link the bookcase to the passage, so opening the bookcase makes the passage visible (or unlock?).

I have opened the bookshelf and typed "in." It shows the passage, it just won't let me go into the passage

I think what Pixie means is that you need to link the exit of the room.object to the other room.object. For example...

A really simple way of doing is you have your original room...

library.object room
bookshelf
pull book verb example
exit appears

create a second room.

bookcase.object room (passage)
once entered player goes here.

Does that make sense?

Anonynn.

I'll make sense of it. I think I understand. Thanks