"ui.errURL" not working???

[rasheed]

Hello All Experts!!

I am wondering that why isn't "ui.errURL" working... when I am using parametrized URL approach to integrate my JSP based web application and Cognos 8.3.

According to my understanding in case of any exception at Cognos side, the user will be redirected to the value of "ui.errURL" parameter. I hope that is the use of this parameter...

But in my application i get "Cognos Security Firewall Rejection" exception, when user session expires and the user is not redirected, but instead shown that ugly exception page. How can I redirect?

Here is the complete URL:

"https://xx.vv.xx.com/cognos8/cgi-bin/cognos.cgi?b_action=cognosViewer&ui.action=run&cv.header=false&ui.object=/content/folder[@name='NoSight']/folder[@name='R33']/folder[@name'Reports']/report[@name='Impact']&ui.name=Impact&run.outputFormat=&run.prompt=true&CAMNamespace=TrustNS&async.primaryWaitThreshold=0&ui.errURL=https://xx.vv.xx.com/cognos8/cgi-bin/cognos.cgi"

Can any one please help? Any thoughts... any experiences...

Have a nice day!!!