Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Forms/Views/StabilityPointStructuresFailureMechanismResultView.cs
===================================================================
diff -u -r4c1753252a3984c26f8d68d0a648f8206aa31536 -r3a1246401dbe3ee905bc595a9e23e184fe8f4767
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Forms/Views/StabilityPointStructuresFailureMechanismResultView.cs	(.../StabilityPointStructuresFailureMechanismResultView.cs)	(revision 4c1753252a3984c26f8d68d0a648f8206aa31536)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Forms/Views/StabilityPointStructuresFailureMechanismResultView.cs	(.../StabilityPointStructuresFailureMechanismResultView.cs)	(revision 3a1246401dbe3ee905bc595a9e23e184fe8f4767)
@@ -125,7 +125,7 @@
                 nameof(StabilityPointStructuresFailureMechanismSectionResultRow.DetailedAssessmentProbability),
                 RingtoetsCommonFormsResources.FailureMechanismResultView_DetailedAssessmentResult_DisplayName);
             DataGridViewControl.AddTextBoxColumn(
-                nameof(StabilityPointStructuresFailureMechanismSectionResultRow.AssessmentLayerThree),
+                nameof(StabilityPointStructuresFailureMechanismSectionResultRow.TailorMadeAssessmentProbability),
                 RingtoetsCommonFormsResources.FailureMechanismResultView_TailorMadeAssessmentResult_DisplayName);
         }
     }
Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Forms/Views/StabilityPointStructuresFailureMechanismSectionResultRow.cs
===================================================================
diff -u -r833e75c2d3d73d3b7c63ab12d44edaa3cbb09bf1 -r3a1246401dbe3ee905bc595a9e23e184fe8f4767
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Forms/Views/StabilityPointStructuresFailureMechanismSectionResultRow.cs	(.../StabilityPointStructuresFailureMechanismSectionResultRow.cs)	(revision 833e75c2d3d73d3b7c63ab12d44edaa3cbb09bf1)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Forms/Views/StabilityPointStructuresFailureMechanismSectionResultRow.cs	(.../StabilityPointStructuresFailureMechanismSectionResultRow.cs)	(revision 3a1246401dbe3ee905bc595a9e23e184fe8f4767)
@@ -100,7 +100,7 @@
         /// <exception cref="ArgumentOutOfRangeException">Thrown when 
         /// <paramref name="value"/> is outside of the valid ranges.</exception>
         [TypeConverter(typeof(NoProbabilityValueDoubleConverter))]
-        public double AssessmentLayerThree
+        public double TailorMadeAssessmentProbability
         {
             get
             {
@@ -109,6 +109,7 @@
             set
             {
                 SectionResult.TailorMadeAssessmentProbability = value;
+                SectionResult.NotifyObservers();
             }
         }
 
Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Forms.Test/Views/StabilityPointStructuresFailureMechanismSectionResultRowTest.cs
===================================================================
diff -u -r833e75c2d3d73d3b7c63ab12d44edaa3cbb09bf1 -r3a1246401dbe3ee905bc595a9e23e184fe8f4767
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Forms.Test/Views/StabilityPointStructuresFailureMechanismSectionResultRowTest.cs	(.../StabilityPointStructuresFailureMechanismSectionResultRowTest.cs)	(revision 833e75c2d3d73d3b7c63ab12d44edaa3cbb09bf1)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Forms.Test/Views/StabilityPointStructuresFailureMechanismSectionResultRowTest.cs	(.../StabilityPointStructuresFailureMechanismSectionResultRowTest.cs)	(revision 3a1246401dbe3ee905bc595a9e23e184fe8f4767)
@@ -60,12 +60,12 @@
             Assert.IsInstanceOf<FailureMechanismSectionResultRow<StabilityPointStructuresFailureMechanismSectionResult>>(row);
             Assert.AreEqual(result.SimpleAssessmentResult, row.SimpleAssessmentResult);
             Assert.AreEqual(result.GetDetailedAssessmentProbability(failureMechanism, assessmentSection), row.DetailedAssessmentProbability);
-            Assert.AreEqual(row.AssessmentLayerThree, result.TailorMadeAssessmentProbability);
+            Assert.AreEqual(row.TailorMadeAssessmentProbability, result.TailorMadeAssessmentProbability);
 
             TestHelper.AssertTypeConverter<StabilityPointStructuresFailureMechanismSectionResultRow, NoProbabilityValueDoubleConverter>(
                 nameof(StabilityPointStructuresFailureMechanismSectionResultRow.DetailedAssessmentProbability));
             TestHelper.AssertTypeConverter<StabilityPointStructuresFailureMechanismSectionResultRow, NoProbabilityValueDoubleConverter>(
-                nameof(StabilityPointStructuresFailureMechanismSectionResultRow.AssessmentLayerThree));
+                nameof(StabilityPointStructuresFailureMechanismSectionResultRow.TailorMadeAssessmentProbability));
             mocks.VerifyAll();
         }
 
@@ -279,26 +279,64 @@
         }
 
         [Test]
-        public void AssessmentLayerThree_ValueSet_ReturnExpectedValue()
+        [TestCase(0)]
+        [TestCase(1)]
+        [TestCase(0.5)]
+        [TestCase(1e-6)]
+        [TestCase(double.NaN)]
+        public void TailorMadeAssessmentProbability_ValidValue_NotifyObserversAndPropertyChanged(double value)
         {
             // Setup
+            var failureMechanism = new StabilityPointStructuresFailureMechanism();
+
             var mocks = new MockRepository();
-            var assessmentSection = mocks.Stub<IAssessmentSection>();
+            IAssessmentSection assessmentSection = AssessmentSectionHelper.CreateAssessmentSectionStub(failureMechanism, mocks);
+            var observer = mocks.StrictMock<IObserver>();
+            observer.Expect(o => o.UpdateObserver());
             mocks.ReplayAll();
 
+            FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
+            var result = new StabilityPointStructuresFailureMechanismSectionResult(section);
+            result.Attach(observer);
+
+            var row = new StabilityPointStructuresFailureMechanismSectionResultRow(
+                result, new StabilityPointStructuresFailureMechanism(), assessmentSection);
+
+            // Call
+            row.TailorMadeAssessmentProbability = value;
+
+            // Assert
+            Assert.AreEqual(value, row.TailorMadeAssessmentProbability);
+            mocks.VerifyAll();
+        }
+
+        [Test]
+        [SetCulture("nl-NL")]
+        [TestCase(-20)]
+        [TestCase(-1e-6)]
+        [TestCase(1 + 1e-6)]
+        [TestCase(12)]
+        public void TailorMadeAssessmentProbability_InvalidValue_ThrowsArgumentOutOfRangeException(double value)
+        {
+            // Setup
             var failureMechanism = new StabilityPointStructuresFailureMechanism();
 
-            var random = new Random(21);
-            double assessmentLayerThree = random.NextDouble();
+            var mocks = new MockRepository();
+            IAssessmentSection assessmentSection = AssessmentSectionHelper.CreateAssessmentSectionStub(failureMechanism, mocks);
+            mocks.ReplayAll();
 
-            var sectionResult = new StabilityPointStructuresFailureMechanismSectionResult(FailureMechanismSectionTestFactory.CreateFailureMechanismSection());
-            var row = new StabilityPointStructuresFailureMechanismSectionResultRow(sectionResult, failureMechanism, assessmentSection);
+            FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
+            var result = new StabilityPointStructuresFailureMechanismSectionResult(section);
 
+            var row = new StabilityPointStructuresFailureMechanismSectionResultRow(
+                result, new StabilityPointStructuresFailureMechanism(), assessmentSection);
+
             // Call
-            row.AssessmentLayerThree = assessmentLayerThree;
+            TestDelegate test = () => row.TailorMadeAssessmentProbability = value;
 
             // Assert
-            Assert.AreEqual(assessmentLayerThree, sectionResult.TailorMadeAssessmentProbability);
+            const string expectedMessage = "De waarde voor de faalkans moet in het bereik [0,0, 1,0] liggen.";
+            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(test, expectedMessage);
             mocks.VerifyAll();
         }
     }