diff --git a/SofarWechselrichter/form.json b/SofarWechselrichter/form.json
index 8b74d17..fbe2987 100644
--- a/SofarWechselrichter/form.json
+++ b/SofarWechselrichter/form.json
@@ -27,6 +27,7 @@
           "caption": "Register-Nummer",
           "name": "RegisterNumber",
           "width": "100px",
+          "add": 0,
           "edit": {
             "type": "NumberSpinner",
             "minimum": 0
@@ -36,6 +37,7 @@
           "caption": "Bezeichnung",
           "name": "Label",
           "width": "200px",
+          "add": "",
           "edit": {
             "type": "ValidationTextBox"
           }
@@ -44,6 +46,7 @@
           "caption": "Skalierungs-faktor",
           "name": "ScalingFactor",
           "width": "100px",
+          "add": 1,
           "edit": {
             "type": "NumberSpinner",
             "digits": 4,