Controller method's parameter returns NULL?

Now it looks like this but the behavior is the same. Thanks for having a look :-)

PHP Code:

$routes->setDefaultController('Pages/view');
$routes->get('ajax/(:segment)', 'Ajax::$1');
$routes->post('ajax/(:segment)', 'Ajax::$1');
$routes->get('news/(:segment)', 'News::view/$1');
$routes->get('news', 'News::index');
$routes->add('(:any)', 'Pages::view/$1');