Hiding tabs in ppm 5.0

Hi,

i am trying to hide some tabs from the project overview screen.The steps i followed are below.

Created a new FPM variant from RPM_ITEM_DETAILS_OIF by copying the RIH_EDIT.

Created a new portfolio type.

Created new launchpad roles, set the Navigation settings and did assignment of the roles/variants/portfolio type in the Object context navigation and related object context navigation.

But the changes to the Variant are not getting reflected to the Project. We have some similar customization for one more portfolio type and it works properly i mean the changes to the variant do get reflected to item.

Am I missing any step here? ( is there anything like Portfolio type <-> launch pad role mapping ) ?

Please do suggest if any one have some idea on this?

Thanks in advance.