Index: Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Data/GrassCoverErosionOutwardsWaveConditionsCalculation.cs
===================================================================
diff -u -rd49a06fcbf63b36885b0d8f09a01f6539bcbfd56 -r7c3056aafbb670d79d239ef3d38e9d942bc33498
--- Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Data/GrassCoverErosionOutwardsWaveConditionsCalculation.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculation.cs)	(revision d49a06fcbf63b36885b0d8f09a01f6539bcbfd56)
+++ Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Data/GrassCoverErosionOutwardsWaveConditionsCalculation.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculation.cs)	(revision 7c3056aafbb670d79d239ef3d38e9d942bc33498)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using Core.Common.Base;
+using Ringtoets.Common.Data;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Revetment.Data;
 using RingtoetsCommonDataResources = Ringtoets.Common.Data.Properties.Resources;
@@ -38,6 +39,7 @@
         {
             Name = RingtoetsCommonDataResources.Calculation_DefaultName;
             InputParameters = new WaveConditionsInput();
+            Comments = new Commentable();
         }
 
         /// <summary>
@@ -52,7 +54,7 @@
 
         public string Name { get; set; }
 
-        public string Comments { get; set; }
+        public Commentable Comments { get; private set; }
 
         public bool HasOutput
         {