SAPscript window to be displayed based on no. of pages

Dear Experts,

There's an issue with the Check number being displayed. Right now, PAY-TO Check window is printed on first page. But for multiple pages, it is considering the initial Check number. It should consider the latest check number.

So, we thought of printing the PAY-TO Check Window in the Last Page.

In the Check, the "PAY-TO" Window  should be displayed based on number of Pages:

          -> If it has 1 Page, then it should be displayed in the First Page.

          -> If it has multiple pages, then it should be displayed in the Last Page.

Please let me know how can this be achieved.

Thanks & Regards,

Sowmya