i’ve found the solution now by myself.
for anyone looking for this problem:
add_action( 'publish_bfm_tbf', 'wp_cdn_mongo_provider_hook_page_update', 10, 2 );
function wp_cdn_mongo_provider_hook_page_update($post_id) {
//...some code...
add_action( 'updated_postmeta', 'wp_cdn_mongo_provider_hook_page_update_after_meta_save', 10, 2 );
}
function wp_cdn_mongo_provider_hook_page_update_after_meta_save($meta_xy, $post_id){
//...some code...