protected function validateDestinationNameCopy()
    {
        $destination = $this->getSubmitted('destination');

        if ($destination !== '' && preg_match('/^[\w-]+[\w-\/]*[\w-]+$|^[\w-]$/', $destination) !== 1) {
            $this->setErrorInvalid('destination', $this->translation->text('Destination'));
        }
    }