public function setRecipientDataParam($recipient_folder, $recipient_list, RecipientIdentifier $recipientIdentifier, array $recipient_ids, array $transientData)
 {
     $recipientDataArray = array();
     $optionalDataArray = array();
     $recipientCount = count($recipient_ids);
     for ($cnt = 0; $cnt < $recipientCount; $cnt++) {
         $optionalDataArray = null;
         $recipient = null;
         $recipient = new Recipient();
         $recipient->setListName($recipient_folder, $recipient_list);
         $recipient->setEmailFormat(EmailFormat::NO_FORMAT);
         $recipient->{"set" . $recipientIdentifier->getValue()}($recipient_ids[$cnt]);
         // Build optionalData array
         foreach ($transientData[$cnt] as $name => $value) {
             $optionalData = null;
             $optionalData = new optionalData();
             $optionalData->setName($name);
             $optionalData->setValue($value);
             $optionalDataArray[] = $optionalData;
         }
         $recipientDataObj = new RecipientData();
         $recipientDataObj->setRecipient($recipient);
         $recipientDataObj->setOptionalData($optionalDataArray);
         $this->params['recipientData'][] = $recipientDataObj;
     }
 }