public function createDatafield($website, $datafield, $type, $visibility = 'Private', $default = 'String')
    {
        $client = $this->getWebsiteApiClient($website);
        switch ($type) {
            case 'Numeric':
                $default = (int)$default;
                break;
            case 'Date':
                $default = $this->datetime->date(\Zend_Date::ISO_8601, $default);
                break;
            case 'Boolean':
                $default = (bool)$default;
                break;
            default:
                $default = (string)$default;
        }

        $response = $client->postDataFields($datafield, $type, $visibility, $default);

        return $response;
    }