AMP on bbPress

Hi, first of all, a big up for your plugin, it’s one the best in the town. But it is possible to use it on bbPress. I’ve managed to use it with this kind of code :

add_action( ‘amp_init’, ‘amp_bbpress_init’ );
function amp_bbpress_init() {
add_post_type_support( ‘topic’, AMP_QUERY_VAR );
}

But it work only on individual topic. If the topic have replies, these don’t show.