3 books open door script

[Lukaboy8]

Thanks for the script andyrockin123! But there are some things I want to change in the script but I don't know how. I want the books to go back in the shelf if the puzzle isn't completed within 30 seconds and I want that you aren't able to push the book back in the shelf. This should only happen if it isn't completed after 30 seconds by itself. How can I make something like that?