if($this -> request -> isPost())
        {
            $name = $this -> request -> getPost('fullname');
            $username = $this -> request -> getPost('email');
            $password = $this -> request -> getPost('password');
            $vpassword = $this -> request -> getPost('cpassword');

            if($password != $vpassword)
            {
                $this -> flash -> error("The passwords doesn't match!!!");
                //return $this -> view -> pick('register'); //Show page/ no error msg
                /*return $this->dispatcher->forward(        //show error/ no page / cyclic routing
                    [
                        'controller'    => 'auth',
                        'action'        => 'register'
                    ]
                );*/
                // Make a full HTTP redirection
                //return $this->response->redirect('auth/register');
            }

return $this -> view -> pick('register');

return $this->dispatcher->forward(
                    [
                        'controller'    => 'auth',
                        'action'        => 'register'
                    ]
                );

Any ideas?