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 public function blabla (Enlight_Event_EventArgs $arguments)
    {

        $xml = new SimpleXMLElement();

        $order 					= $arguments->getSubject();
        $orderDetails 			= $arguments->getDetails();
        $UserData                             = $order->sUserData;
        $orderNumber                      = $order->sOrderNumber;

        $data = $xml->addChild('data');  

        $data->addChild('OrderNumber', $orderNumber);  
        $data->addChild('priceWithTax', $preis);  

        $data->addChild('shipping_title', $UserData ["shippingaddress"] ["title"] );  

        $dom = new DOMDocument('1.0');  
        $dom->preserveWhiteSpace = false;
        $dom->formatOutput = true;
        $dom->loadXML($xmlAusgabe = $xml->asXML());
        $dom->save('files/test/Export' . $orderNumber . '.xml');  
    }