Symfony2 custom event dispatcher and listener

I am trying to create custom event, but can't make it work. What I have done: 1.I created event identifying class in ``` namespace Path\ToBundle; final class CookieEvents { const COOKIE_EVENT = 'cookie.event'; } ``` 2.Created event ``` namespace Path\ToBundle\EventListener; use Path\ToBundle\Event\FilterResponseEvent; class ResponseListener { public function onCookieInit(FilterResponseEvent $event) { //some complex logic goes here echo('test'); } } ``` 3.created event listener ``` namespace Path\ToBundle\Event; use Symfony\Component\EventDispatcher\Event; use Symfony\Component\HttpFoundation\Response; class FilterResponseEvent extends Event { protected $response; public function __construct(Response $response) { $this->response = $response; } public function getResponse() { return $this->response; } } ``` 4.Tried to register event listener inside service.yml ``` kernel.listener.cookie.event: class: Path\ToBundle\Event\ResponseListener tags: - { name: kernel.event_listener, event: cookie.event, method: onCookieInit } ``` 5.Next I try to dispatch event inside controller action ``` //includes before class use Symfony\Component\EventDispatcher\EventDispatcher; use Path\ToBundle\Event\FilterResponseEvent; //inside controller action //... $response variable is created $dispatcher = new EventDispatcher(); $event = new FilterResponseEvent($response); $dispatcher->dispatch(CookieEvents::COOKIE_EVENT, $event); return $response; //EOF controller action ``` What I'm trying to achieve is to be able fire event on certain actions. Unfortunately this doesn't work. The events concept is new to me and, I am still not confident in what I am doing here, but's it what I was able to figure out of the examples. Maybe someone could tell me if I'm going to right direction and correct me? If not, some guidance is even more appreciated.