So please cross out 'cheat', and instead of it answer a question: is there any 'smart' way to show parameter in drawing that will be calculate in a following way: my_total_sheets=total_sheets:d -1;?
In a sample, when the third sheet contains information for manufacturing, guy that will have to sign a paper documentation for sure will say:'you give me only 2 sheets, where is the last one?'. Last page is not printable.