URL iView

Hi,

I have created a URL iView to generate a Web Report and assigned to the User. Thru that user, while I access, system is asking the User Id and Password to connect to my BW system. Even if I give the correct User Id & Password, system is asking the same again and again. But, if I preview the report thru design mode and then if I access the iView link, the report is getting displayed.

Any idea, how to pass the User Id and Password to connect to my BW system? I tried to send the User Id, Password thru attributes to the URL iView, but it is not working.