Event handler in CQ5

Hi,

My requirement is whenever i create a new page CQ has to add the new property.

so i prefered Even handlers and followed the below code.

The problem is i dont know weather the code is running?

i have checked the console i didn't get any log as well.

could anyone please help me and explain how event handlers running in CQ?

@Component public class ExampleObservation implements EventListener {  Logger log = LoggerFactory.getLogger(this.getClass());  private Session adminSession;  @Reference  SlingRepository repository;  @Activate  public void activate(ComponentContext context) throws Exception {  log.info("activating ExampleObservation");  try {    adminSession = repository.loginAdministrative(null);    adminSession.getWorkspace().getObservationManager().addEventListener(

      this, //handler

      Event.PROPERTY_ADDED|Event.NODE_ADDED, //binary combination of event types

      "/content/", //path

      true, //is Deep?

      null, //uuids filter

      null, //nodetypes filter       false);   } catch (RepositoryException e){   log.error("unable to register session",e);   throw new Exception(e);  } }

@Deactivate public void deactivate(){  if (adminSession != null){   adminSession.logout();  } }   public void onEvent(EventIterator eventIterator) {   try {     while (eventIterator.hasNext()){

      log.info("something has been added : {}", eventIterator.nextEvent().getPath());

    }    } catch(RepositoryException e){    log.error("Error while treating events",e);   }  } }