>My coding to get total page number
>report form PRNORDER noconsole for ORDER_ID = _ORDER_ID
>total_page = _pageno
>report form PRNORDER PRINT PROMPT for ORDER_ID = _ORDER_ID
>
>but total_page return wrong result
>please help, have you any method to get right total page number.

You need to run the report twice, the first time to a file.

REPORT FORM PrnOrder TO FILE Dummy.tmp NOCONSOLE for ORDER_ID = _ORDER_ID
total_page = _PAGENO && total_page has the total number of pages
REPOR FORM PrnOrder TO PRINTER for ORDER_ID = _ORDER_ID