Index: Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategy.cs
===================================================================
diff -u -r6a29395620a9ccb1c1e96767f8a137848ae8900a -rf8337bdd0627f170f760ebf42bca623567cf440f
--- Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategy.cs	(.../MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategy.cs)	(revision 6a29395620a9ccb1c1e96767f8a137848ae8900a)
+++ Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategy.cs	(.../MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategy.cs)	(revision f8337bdd0627f170f760ebf42bca623567cf440f)
@@ -21,6 +21,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using Riskeer.Common.Data.FailureMechanism;
 using Riskeer.Common.Data.Probability;
 
@@ -71,7 +72,10 @@
         {
             double probability = sectionResult.GetInitialFailureMechanismResultProbability(calculationScenarios,
                                                                                            failureMechanism.GeneralInput.ModelFactor);
-            return Math.Min(1.0, probability * failureMechanism.ProbabilityAssessmentInput.GetN(sectionResult.Section.Length));
+
+            MacroStabilityInwardsScenarioConfigurationPerFailureMechanismSection sectionConfiguration =
+                failureMechanism.ScenarioConfigurationsPerFailureMechanismSection.Single(c => ReferenceEquals(sectionResult.Section, c.Section));
+            return Math.Min(1.0, probability * sectionConfiguration.GetN(failureMechanism.ProbabilityAssessmentInput.B));
         }
     }
 }
\ No newline at end of file
Index: Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Data.Test/MacroStabilityInwardsFailureMechanismAssemblyFactoryTest.cs
===================================================================
diff -u -ra05c34f73bb94c532e121b758c18dcb586646b07 -rf8337bdd0627f170f760ebf42bca623567cf440f
--- Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Data.Test/MacroStabilityInwardsFailureMechanismAssemblyFactoryTest.cs	(.../MacroStabilityInwardsFailureMechanismAssemblyFactoryTest.cs)	(revision a05c34f73bb94c532e121b758c18dcb586646b07)
+++ Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Data.Test/MacroStabilityInwardsFailureMechanismAssemblyFactoryTest.cs	(.../MacroStabilityInwardsFailureMechanismAssemblyFactoryTest.cs)	(revision f8337bdd0627f170f760ebf42bca623567cf440f)
@@ -148,9 +148,13 @@
         {
             // Setup
             FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
-            var sectionResult = new AdoptableFailureMechanismSectionResult(section);
-
             var failureMechanism = new MacroStabilityInwardsFailureMechanism();
+            FailureMechanismTestHelper.SetSections(failureMechanism, new[]
+            {
+                section
+            });
+            AdoptableFailureMechanismSectionResult sectionResult = failureMechanism.SectionResults.Single();
+
             var assessmentSection = new AssessmentSectionStub();
 
             using (new AssemblyToolCalculatorFactoryConfig())
@@ -172,9 +176,13 @@
         {
             // Setup
             FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
-            var sectionResult = new AdoptableFailureMechanismSectionResult(section);
-
             var failureMechanism = new MacroStabilityInwardsFailureMechanism();
+            FailureMechanismTestHelper.SetSections(failureMechanism, new[]
+            {
+                section
+            });
+            AdoptableFailureMechanismSectionResult sectionResult = failureMechanism.SectionResults.Single();
+            
             var assessmentSection = new AssessmentSectionStub();
 
             using (new AssemblyToolCalculatorFactoryConfig())
@@ -242,10 +250,10 @@
                     ProbabilityResultType = FailureMechanismAssemblyProbabilityResultType.P2
                 }
             };
-            failureMechanism.SetSections(new[]
+            FailureMechanismTestHelper.SetSections(failureMechanism, new[]
             {
                 FailureMechanismSectionTestFactory.CreateFailureMechanismSection()
-            }, "APath");
+            });
 
             var assessmentSection = new AssessmentSectionStub();
 
Index: Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Data.Test/MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategyTest.cs
===================================================================
diff -u -rb0cefe30e5099ee2f465ed7660199789e6d1b865 -rf8337bdd0627f170f760ebf42bca623567cf440f
--- Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Data.Test/MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategyTest.cs	(.../MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategyTest.cs)	(revision b0cefe30e5099ee2f465ed7660199789e6d1b865)
+++ Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Data.Test/MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategyTest.cs	(.../MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategyTest.cs)	(revision f8337bdd0627f170f760ebf42bca623567cf440f)
@@ -134,11 +134,16 @@
         {
             // Setup
             FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
-            var sectionResult = new AdoptableFailureMechanismSectionResult(section);
+            var failureMechanism = new MacroStabilityInwardsFailureMechanism();
+            FailureMechanismTestHelper.SetSections(failureMechanism, new[]
+            {
+                section
+            });
+            AdoptableFailureMechanismSectionResult sectionResult = failureMechanism.SectionResults.Single();
 
             var strategy = new MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategy(
                 sectionResult, Enumerable.Empty<MacroStabilityInwardsCalculationScenario>(),
-                new MacroStabilityInwardsFailureMechanism());
+                failureMechanism);
 
             // Call
             double sectionProbability = strategy.CalculateSectionProbability();
@@ -149,7 +154,12 @@
 
         private static MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategy CreateStrategyForMultipleScenarios(FailureMechanismSection section)
         {
-            var sectionResult = new AdoptableFailureMechanismSectionResult(section);
+            var failureMechanism = new MacroStabilityInwardsFailureMechanism();
+            FailureMechanismTestHelper.SetSections(failureMechanism, new[]
+            {
+                section
+            });
+            AdoptableFailureMechanismSectionResult sectionResult = failureMechanism.SectionResults.Single();
 
             const double factorOfStability1 = 1.0 / 10.0;
             const double factorOfStability2 = 1.0 / 20.0;
@@ -172,7 +182,7 @@
             };
 
             return new MacroStabilityInwardsFailureMechanismSectionResultCalculateProbabilityStrategy(
-                sectionResult, calculations, new MacroStabilityInwardsFailureMechanism());
+                sectionResult, calculations, failureMechanism);
         }
     }
 }
\ No newline at end of file