diff --git a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/einvoice/KSeFAdapter.java b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/einvoice/KSeFAdapter.java
index 37302a2..aeb5149 100644
--- a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/einvoice/KSeFAdapter.java
+++ b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/einvoice/KSeFAdapter.java
@@ -15,6 +15,7 @@ import org.imixs.archive.core.SnapshotService;
 import org.imixs.einvoice.EInvoiceFormatException;
 import org.imixs.einvoice.EInvoiceModel;
 import org.imixs.einvoice.EInvoiceModelFactory;
+import org.imixs.einvoice.EInvoiceModelKSeF;
 import org.imixs.einvoice.EInvoiceNS;
 import org.imixs.einvoice.TradeLineItem;
 import org.imixs.einvoice.TradeParty;
@@ -157,11 +158,11 @@ public class KSeFAdapter implements SignalAdapter {
             Element elementFa = model.findOrCreateChildNode(model.getRoot(), EInvoiceNS.KSEF, "Fa");
 
             if (isKorrekturRechnung(workitem)) {
-                model.updateElementValue(elementFa, EInvoiceNS.KSEF, "RodzajFaktury", "KOR");
+                ((EInvoiceModelKSeF) model).setRodzajFaktury("KOR");
                 logger.info("│   ├──  invoice type=KOR");
             } else {
                 // normale rechnung
-                model.updateElementValue(elementFa, EInvoiceNS.KSEF, "RodzajFaktury", "VAT");
+                ((EInvoiceModelKSeF) model).setRodzajFaktury("VAT");
                 logger.info("│   ├──  invoice type=VAT");
             }
             // Update Rechnungssummen...