MENU_HELPER_SUBMENU_TYPE_UL
in custom/menu_helper/menu_helper_submenu/menu_helper_submenu.module
<?php
define('MENU_HELPER_SUBMENU_TYPE_UL', 2);
?>
in custom/menu_helper/menu_helper_submenu/menu_helper_submenu.module
<?php
define('MENU_HELPER_SUBMENU_TYPE_UL', 2);
?>