Rinshin, I think I understand now what you're trying to do, but unfortunately it's not possible the way EYB is set up. You'd be trying to add "private info" to a Book's listing in the EYB Library/your Bookshelf, but members do not have access to the data in Book records. Even when the much-requested ability for members to add their older, ISBN-less books to the EYB Library is a reality, what you're suggesting would still not be doable; members would only be able to enter the book's basic bibliographic information, similar to what now appears in the EYB Library/Books for each title.