BuddyPress.org

Hi,
I would like to change the ‘show_tab’ arguments based on a setting made by teh group admin.
Something like:

 $is_wanted  = groups_get_groupmeta( $group_id, 'show-to' );

<?php if ($is_wanted): ?>
'show_tab'=> 'member'
<?php else: ?>
'show_tab'=> 'admin'
<?php endif; ?>

How can this parameter be accessed?

Thanks for your help!