посмотри как счетчик описан ... мож там односимвольная переменная

Symptom
When printing, all numbers of the multi-digit total page number of a form are not output in the symbol SAPSCRIPT-FORMPAGES. For example, only '2' appears on pages 1 to 9 instead of 23.

The total page number is entered as follows in the form:
0

Additional key words
SAPscript, Symbol, Program icon, SAPSCRIPT-FORMPAGES

Cause and prerequisites
The CONDENSE option cannot be used on the program icon SAPSCRIPT-FORMPAGES (C) without an explicit length specification: This symbol is only replaced with a value after the form has been completely edited, as the total number of pages of a form is first known in the program function END_FORM or CLOSE_FORM.

However, the size of the symbol (number of characters) is reserved correctly when the symbol first occurs, with the current page number. Therefore, only one character is reserved for option C (CONDENSE) on pages 1-9, two characters on pages 10-99, and so on

Solution
Either remove the option C:

Page: &PAGE& of 0

or create a predefined length specification (2 or 3 characters, depending on the number of pages expected):

Page: &PAGE& of 0