Order of the user variables

Hello,

I have the following problem, it concerns the order of the user variables.

L&L15:
User1=@aaPage; 15
User2=@aNPage;(@aapage -(Page ()))+1

L&L16:
User1=@aNPage;(@aapage -(Page ()))+1
User2=@aaPage; 15

I think that L&L has changed the order of the user variables.

Do I have to make a conversion or can I do something else
so that not all my customers will have this problem?

Any help will be appreciated. Thanks!