bbPress.org

ok, I now understand what you want.

Put this in your child theme’s function file –

ie wp-content/themes/%your-theme-name%/functions.php

where %your-theme-name% is the name of your theme

or use

Code Snippets

add_action ('bbp_new_reply_post_extras' , 'rew_update_topic') ;
add_action ('bbp_edit_reply_post_extras' , 'rew_update_topic') ;

function rew_update_topic ($reply_id) {
	$topic_id = bbp_get_reply_topic_id( $reply_id );
	$topic_data = apply_filters( 'rew_update_topic', array(
		'ID'           => $topic_id,
	) );

$topic_id = wp_update_post( $topic_data );
}