Log off from web report

Dear All,

I have a log off button in the web report. I am using the following command:

SAP_BW_URL CMD="LOG_OFF" REDIRECT_URL='http://'

I redirect the users to a different web page. But when the users clicks the back button and refreshes the web page, he/she isn't prompted to log on again, rather he can just execute the report.

How can I fix this.

I am using automatic session management (Active) too.

Thanks in advance.

Message was edited by: KBWUSER