on the medivial modpack fabric by SHXRKIE you can store xp with the books but you cannot recieve them back.

Hello again, what version of the mod and minecraft are you using? Also, I'm still waiting for more detailed explanation of your issue to be able to dive in. Otherwise, I'll need to close the issue

Hello, thanks for the report! I will take a look at the modpack. You can also tell me more precisely what you mean by "you can't receive them back", like you empty the book but the experience is not retrieved and lost?