How to pass parameter to web service.

How to pass parameter to web service.

  
Hi Community,

i am using SSRS 2008 Reports in my outsystems application,integrated through a web service(MSSqlReportWebService),
created by outsystems.
every thing is working perfect.
But,
The Problem is, how i pass parameter to report....?

any body help please

Thanks and Regards.

Israr A Khan