bp_activity_post_update_object

apply_filters( 'bp_activity_post_update_object',  $_POST['whats-new-post-object'] )

bp_activity_post_update_item_id

apply_filters( 'bp_activity_post_update_item_id', $_POST['whats-new-post-in']     )

apply_filters( 'bp_activity_post_update_content', $_POST['whats-new']             )

apply_filters( 'bp_activity_post_comment_content', $_POST['ac_input_' . $activity_id] )

apply_filters( 'bp_activity_post_comment_activity_id', $_POST['comment_form_id'] )

apply_filters( 'bp_activity_custom_update', $_POST['object'], $_POST['item_id'], $_POST['content'] )

do_action( 'bp_register_activity_actions' )

do_action( 'bp_activity_before_action_delete_activity', $activity_id, $activity->user_id )

do_action( 'bp_activity_action_delete_activity', $activity_id, $activity->user_id )