protected function declareListOfValues($fields)
    {
        try {
            $this->getSoapClient()->SetFieldValues(array(
                'fieldValues' => $this->getSoapClient()->convertArray($fields)
            ));
        } catch ( SoapException $e ) {
            throw new DeclarationException('Error while sending the fields/values binding to Livedocx service' , $e);
        }

        return $this;
    }