* @param integer $fCode set it to anything but 0 to create an error response. In that case, $val is discarded
* @param string $fString the error string, in case of an error response
* @param string $valType The type of $val passed in. Either 'xmlrpcvals', 'phpvals' or 'xml'. Leave empty to let
* @param integer $fCode set it to anything but 0 to create an error response. In that case, $val is discarded
* @param string $fString the error string, in case of an error response
* @param string $valType The type of $val passed in. Either 'xmlrpcvals', 'phpvals' or 'xml'. Leave empty to let