void BillingEngine_EinvNodeAdded(object sender, MercatorUi.Engine.Gescom.BillingEngine.EinvNodeAddedEventArgs e)
{
MercatorUi.Engine.Gescom.BillingEngine billingEngine = (MercatorUi.Engine.Gescom.BillingEngine)sender;
if ((e.Node.Name == "cac:OrderReference") && (billingEngine.PIEDS["libre1"].ToString().Trim() != string.Empty))
{
XmlNode n = billingEngine.EinvAddNode(e.eInvoiceEnum, e.ParentNode, "cac:ContractDocumentReference");
billingEngine.EinvAddNode(e.eInvoiceEnum, n, "cbc:ID", billingEngine.PIEDS["libre1"].ToString().Trim());
billingEngine.EinvAddNode(e.eInvoiceEnum, n, "cbc:DocumentTypeCode", "105", new MercatorUi.Engine.Gescom.Tools.EinvNodeAttribute("listID", "UNCL1001"));
billingEngine.EinvAddNode(e.eInvoiceEnum, n, "cbc:DocumentType", "Purchase order");
}
}