Problem with routes in multi modules app

I have multi models application. In my Bootrstrap I set up to DI Roter class

$this->getDi()->set('router', function () {

    $router =  new \Phalcon\Mvc\Router(false);
    $router->add("/:module/:controller/:action/:params", array(
        "module" => 1, 
        "controller" => 2,
        "action" => 3,
        "params" => 4,
    ));

    $router->add('/', array(
        'namespace' => 'Frontend\Controllers',
        'module' => 'frontend',
        'controller' => 'index',
        'action' => 'test'
    ));

    return $router;
}, true);

In my module in Module.php file I add additional routes:

$router = $di->get('router'); 
$router->add("/test", array(
        'module' => 'frontend',
        'controller' => 'index',
        'action' => 'test'
));

and unfortunately no routes which were added to Module.php are working.