Does report support this parameters: ...&rs:Format=HTML4.0&rc:Parameters=false&ChainID:isN

hi,
I am working on some report page which will be access via URL.
And I found some old reports URL look like this:
...&rs:Format=HTML4.0&rc:Parameters=false&UserID:isNull=True...
What does the UserID:IsNull=True means? Is this right format for
SSRS2005?
ThanksIt means you have a parameter defined for your report called UserID and
you're setting its value to null via the URL.
Andy Potter|||Oh, ic, Thanks