function fault($faultcode,$faultstring,$faultactor='',$faultdetail=''){
		if ($faultdetail == '' && $this->debug_flag) {
			$faultdetail = $this->getDebug();
		}
		$this->fault = new nusoap_fault($faultcode,$faultactor,$faultstring,$faultdetail);
		$this->fault->soap_defencoding = $this->soap_defencoding;
	}