BPM Inbox- Remove log off button in content area

Hi All,

As part of some requirement, I need to assign BPM inbox to portal users as a tab role. I created an iView for BPM inbox but when i open the link, it shows log off button with the detailed navigation area (within the iview).

I tried creating URL iView as well as UI 5 iview for the same and passed parameter sap-ui-inbox-header=false for hiding the BPM header/log off button as mentioned in the link below:

http://help.sap.com/saphelp_nw73ehp1/helpdata/en/36/d5a32bca8447aebf7306859e790219/frameset.htm?fullscreen=true

However, I can still see the log off button within the iView on preview.

Request any pointers to resolve this issue.

Thanks