>I need to create a report that have at least 3 copies. I can use the FOR..NEXT, but I think that I can use system variable _pcopies. How ???

To use the system variable '_pcopies' encapsulate your print request within a printjob:
_pcopies=3
PrintJob
report form "whatever" to print noconsole...
EndPrintJob

If useing fox 2.6 or visual 5.0 you can use the prompt cluase in the report statement:
report form "whatever" to print noconsole prompt

The second method will only generate the report once where the first is actually an implicit loop.