I'm following "How to expose a Semantic Configuration for a Bundle" official manual for symfony 2.

I have my configuration.php

```
namespace w9\UserBundle\DependencyInjection;

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class Configuration implements ConfigurationInterface
{
    /**
     * {@inheritDoc}
     */
    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder();
        $rootNode = $treeBuilder->root('w9_user');

        $rootNode
            ->children()
                ->scalarNode('logintext')->defaultValue('Zareejstruj się')->end()
            ->end()
        ;        

        return $treeBuilder;
    }
}

```

And w9UserExtension.php:

```
namespace w9\UserBundle\DependencyInjection;

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\Config\FileLocator;
use Symfony\Component\HttpKernel\DependencyInjection\Extension;
use Symfony\Component\DependencyInjection\Loader;

class w9UserExtension extends Extension
{
    /**
     * {@inheritDoc}
     */
    public function load(array $configs, ContainerBuilder $container)
    {
        $configuration = new Configuration();
        $config = $this->processConfiguration($configuration, $configs);

        $loader = new Loader\YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
        $loader->load('services.yml');
    }
}

```

It may sounds silly, but I'm not able to find the way, how to access logintext parameter in controller?

```
$logintext = $this->container->getParameter("w9_user.logintext");

```

does not work.

What I'm doing wrong?