BuddyPress.org

Well, i tried something like this:

$activity = bp_activity_get_friends_activity( $user_id=$bp_loggedin_user_id, $max_items = 30, $max_items_per_friend = false, $pag_num = false, $pag_page = false ) ;

however it returns no results – empty list and msg: no activity

any suggestions how may I improve it ?