>Hello.
>How I Can to define the paper's size in run time for a report?
>
>Thanks.

Open .frx file as a table and change settings in Expr field of the first record:
PAPERSIZE=< nnn >, where nnn is papersize code or 256 for custom paper size. See help for PRTINFO( ) Function for details.
For PAPERSIZE=256
PAPERLENGTH=< lll > in .1mm
PAPERWIDTH=< www > in .1mm

For WinNT and Win2K see also mskb#Q304639 HOWTO: Find PaperSize for Custom Print Sizes Under Windows NT and Windows 2000 and mskb#Q157172 How to Create Custom Forms in Windows NT 4.0 and Windows 2000