$params['entityTable'] = CRM_Utils_Request::retrieve('entityTable', 'String', CRM_Core_DAO::$_nullObject, TRUE);
$params['entityID'] = CRM_Utils_Request::retrieve('entityID', 'Positive', CRM_Core_DAO::$_nullObject, TRUE);
$params['fileID'] = CRM_Utils_Request::retrieve('fileID', 'Positive', CRM_Core_DAO::$_nullObject, TRUE);
$params['entityTable'] = CRM_Utils_Request::retrieve('entityTable', 'String', CRM_Core_DAO::$_nullObject, TRUE);
$params['entityID'] = CRM_Utils_Request::retrieve('entityID', 'Positive', CRM_Core_DAO::$_nullObject, TRUE);
$params['fileID'] = CRM_Utils_Request::retrieve('fileID', 'Positive', CRM_Core_DAO::$_nullObject, TRUE);