Problem in displaying SAP SCRIPT Page numbers

Hi,

I have a problem in printing the total form pages in my SAP Script output.

There are actually 13 pages in my output. And i'm using

Page &PAGE&/&SAPSCRIPT-FORMPAGES(C)&

to print the page numbers and the total page numbers.

But in the output it is displaying as Page 1/1 in page 1,

Page 2/1 in page 2,........... for the first 10 pages.

There after it is printing as Page 11/13 in page 11,

Page 12/13 in page 12,

Page 13/13 in page 13.

Can some one help me in resolving the issue....