Pass parameter from design studio to report design

Hello,
i ask if is possible pass a list of parameter from design studio (xaction file) to report design.

I try to explain:
NOW i have an file.xaction that is scheduled and send to ten peoples via mail one different report. I have 10 file.prpt similar to each other, change only one string that appear in the final report.
Is possible say to design studio to send 10 mail/report (like now) but from the same prpt file with a different string for every report?

(excuse me for my bad english)

Thank you! :)