Register error: Undefined variable: userEntity about cakephp-user-tools HOT 7 CLOSED

    public function register($options = []) {
        $options = Hash::merge($this->_config['registration'], $options);
        if ($options['enabled'] === false) {
            throw new NotFoundException();
        }
        $entity = $this->UserTable->newEntity();

        $return = false;                 // make return as a variable

        // Make the field accessible in the case the default entity class is used.
        $entity->accessible('confirm_password', true);
        if ($this->request->is('post')) {
            $entity = $this->UserTable->patchEntity($entity, $this->request->data());
            if ($this->UserTable->register($entity)) {
                $this->handleFlashAndRedirect('success', $options);
                if ($options['setEntity'] === true) {
                    $this->_controller->set('usersEntity', $entity);
                }

                $return = true;    //dont return here, just set the value to true

            } else {
                $this->handleFlashAndRedirect('error', $options);
                if ($options['setEntity'] === true) {
                    $this->_controller->set('usersEntity', $entity);
                }
            }
        }
        //this line will executed in all cases, no return before.
        if ($options['setEntity'] === true) {
            $this->_controller->set('userEntity', $entity);
            // BC
            $this->_controller->set('usersEntity', $entity);
        }

        //the return comes here
        return $return;
    }