Firing events in seam components
@Name("plugin")
@Stateless
@WebService(name = "PluginService", serviceName = "PluginService")
public class PluginService implements IPlugin {
    @WebMethod
    public boolean createUser(String username, String password) {
        System.out.println("in login ");
        WebAuthenticator authenticator = (WebAuthenticator) Component
                .getInstance("webauthenticator");

        usreCreated = authenticator.create(username, password);
        System.out.println("valid user "+validUser);
                return userCreated;
}
}

@Name("webauthenticator")
@Scope(ScopeType.CONVERSATION)

public class WebAuthenticator {

    @In
    EntityManager entityManager;

        @Observer("test")
        public void test()
        {
        System.out.println("A transaction success event was fired");
        }

    private static Log log = (Log) Logging.getLog(WebAuthenticator.class);
    private static byte[] accountPassword = null;
    private static Account currentAccount = null;

    public boolean createUser(String username, String password) {

        System.out.println("In web authenticator");
                User user = new User();
                user.username = username;
                user.password = password;
                entityManager.persist(user);
                entityManager.flush();
                Events.instance().raisTransactionSuccessEvent("test");
}
}

<persistence:managed-persistence-context
   auto-create="true" name="entityManager" persistence-unit-jndi-   name="java:/pilotEntityManagerFactory" />