Restarting chapter count when compiling a box set?

I’m pretty new to Scrivener and have run into a problem. I’m trying to compile a three book boxed set. I have each book in a separate folder, and each book has its chapters in individual folders marked ‘CHAPTER’ so that the automatic chapter count does it magic. However, when I hit ‘compile’ , the chapter count doesn’t reset to ‘One’ when book 2 begins, or again when book 3 begins. Is there a way to reset the chapter count once you reach the end of one book and start the next in the set? At the moment, I have chapters one through to 160! Any help would be greatly appreciated!