// build custom data getFields array
$customFieldsRole = CRM_Core_BAO_CustomField::getFields('Participant', FALSE, FALSE, NULL, $this->_roleCustomDataTypeID);
$customFieldsEvent = CRM_Core_BAO_CustomField::getFields('Participant', FALSE, FALSE, NULL, $this->_eventNameCustomDataTypeID);
// build custom data getFields array
$customFieldsRole = CRM_Core_BAO_CustomField::getFields('Participant', FALSE, FALSE, NULL, $this->_roleCustomDataTypeID);
$customFieldsEvent = CRM_Core_BAO_CustomField::getFields('Participant', FALSE, FALSE, NULL, $this->_eventNameCustomDataTypeID);