Working with URL parameters

Hi,

I created a url iview for Oracle IDM. Now i want ot append user id to this url.I found some URL parameters when i open url iview, but how to pass the parameters i'am not getting it. If i pass will it append the user infomarion on to url when i use this iview and make me to access the destination system. Please let me know on this.

Regards,

Pradeep