BuddyPress.org

hey guys,
i want to change the function bp_get_the_notification_description().

how to filter them?

if i try do that like this:

add_filter(bp_get_the_notification_description,bp_get_the_notification_description_change_link,1,2);

the result will be:
Notice: Use of undefined constant bp_get_the_notification_description – assumed ‘bp_get_the_notification_description’ in /mnt/web313/d2/98/57260698/htdocs/goUnhooked/wp-content/themes/kleo-child/functions.php on line 303 Notice: Use of undefined constant bp_get_the_notification_description_change_link – assumed ‘bp_get_the_notification_description_change_link’ in /mnt/web313/d2/98/57260698/htdocs/goUnhooked/wp-content/themes/kleo-child/functions.php on line 303 ‘