Automated Books booking (1 Viewer)

[Gismo]

Hi All,

i want to book in books
we use the first and last page number as book reference
not sure how to automate this by only using the first book page number, the first book last page number and the number of books
i calculate the pages per book using first and last page number

any ideas please

 

[theDBguy]

NoOfPages: [LastPage]-[FirstPage]

Maybe?

 

[Cronk]

Or
NoOfPages: [LastPage]-[FirstPage] +1