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:PaymentMeans")
    {
        XmlNode n = billingEngine.EinvAddNode(e.eInvoiceEnum, e.ParentNode, "cac:PaymentTerms");
        billingEngine.EinvAddNode(e.eInvoiceEnum, n, "cbc:Note", MercatorController.xFunctions.xDelai(billingEngine.CLI["c_paiem"].ToString(), billingEngine.CLI["c_langue"].ToString()));
    }
}