Total Theme: Change Breadcrumb trail

/*CHANGE BREADCRUMBS*/
function myprefix_tweak_breadcrumbs( $trail ) {
	global $post;
	if (get_post_type( $post->ID ) == "expertenprofil") {
		$trail['trail_end'] = get_post_meta($post->ID, 'wpcf-anonymer-titel', true);
		return $trail;
	}
}
add_filter( 'wpex_breadcrumbs_trail', 'myprefix_tweak_breadcrumbs' );