Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/FailureMechanismContributionView.cs
===================================================================
diff -u -r6fc99be8198e5795ca4be54719dab3d1be3c6299 -r5600bdc79b866be64b1c51026ce5f13c1f1c9226
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/FailureMechanismContributionView.cs	(.../FailureMechanismContributionView.cs)	(revision 6fc99be8198e5795ca4be54719dab3d1be3c6299)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/FailureMechanismContributionView.cs	(.../FailureMechanismContributionView.cs)	(revision 5600bdc79b866be64b1c51026ce5f13c1f1c9226)
@@ -55,12 +55,12 @@
 
         private void BindNormChange()
         {
-            normTextBox.LostFocus += NormTextBoxOnLostFocus;
+            normInput.ValueChanged += NormTextBoxValueChanged;
         }
 
-        private void NormTextBoxOnLostFocus(object sender, EventArgs eventArgs)
+        private void NormTextBoxValueChanged(object sender, EventArgs eventArgs)
         {
-            data.Norm = Int32.Parse(normTextBox.Text);
+            data.Norm = (int) normInput.Value;
             data.NotifyObservers();
         }
 
@@ -96,7 +96,7 @@
 
         private void SetNormText()
         {
-            normTextBox.Text = string.Format("{0}", data.Norm);
+            normInput.Value = data.Norm;
         }
     }
 }
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