diff --git a/DEHPCommon.Tests/Services/ExchangeHistoryServiceTestFixture.cs b/DEHPCommon.Tests/Services/ExchangeHistoryServiceTestFixture.cs
index 50ce570..8d7dc23 100644
--- a/DEHPCommon.Tests/Services/ExchangeHistoryServiceTestFixture.cs
+++ b/DEHPCommon.Tests/Services/ExchangeHistoryServiceTestFixture.cs
@@ -232,5 +232,37 @@ public void VerifyClear()
             this.service.ClearPending();
             Assert.IsEmpty(this.service.PendingEntries);
         }
+
+        [Test]
+        public void VerifyAppendWithMultipleValuesValueSets()
+        {
+            var values = new List<string>() { "-", "-", "-" };
+
+            var valueSet = new ParameterValueSet()
+            {
+                Computed = new ValueArray<string>(values)
+            };
+
+            var valueSetClone = valueSet.Clone(false);
+
+            var compoundParameterType = new CompoundParameterType()
+            {
+                Name = "testParameterType",
+                ShortName = "testParameterType",
+                Component =
+                {
+                    new ParameterTypeComponent() { ParameterType = new DateParameterType() { Name = "date" } },
+                    new ParameterTypeComponent() { ParameterType = new TextParameterType() { Name = "text" } },
+                    new ParameterTypeComponent() { ParameterType = new SimpleQuantityKind() { Name = "number" } }
+                }
+            };
+
+            var parameter = new Parameter() { ParameterType = compoundParameterType, ValueSet = { valueSet }};
+            this.element.Parameter.Add(parameter);
+            
+            Assert.DoesNotThrow(() => this.service.Append(valueSet, valueSetClone));
+
+            Assert.IsTrue(this.service.PendingEntries.LastOrDefault()?.Message.Contains(compoundParameterType.Name));
+        }
     }
 }
diff --git a/DEHPCommon.Tests/UserInterfaces/ViewModels/ObjectBrowserViewModelTestFixture.cs b/DEHPCommon.Tests/UserInterfaces/ViewModels/ObjectBrowserViewModelTestFixture.cs
index d86e7fa..ab13f2a 100644
--- a/DEHPCommon.Tests/UserInterfaces/ViewModels/ObjectBrowserViewModelTestFixture.cs
+++ b/DEHPCommon.Tests/UserInterfaces/ViewModels/ObjectBrowserViewModelTestFixture.cs
@@ -155,6 +155,7 @@ public void VerifyTreesGetBuilt()
             this.viewModel.BuildTrees(iterationClone);
             Assert.IsNotEmpty(this.viewModel.Things);
             Assert.AreEqual(1, this.viewModel.Things.Count);Assert.IsEmpty(this.viewModel.Things.First().ContainedRows);
+            Assert.IsTrue(this.viewModel.Things.FirstOrDefault()?.IsExpanded);
         }
 
         [Test]
diff --git a/DEHPCommon/Services/ExchangeHistory/ExchangeHistoryService.cs b/DEHPCommon/Services/ExchangeHistory/ExchangeHistoryService.cs
index 6aeded1..f6584ee 100644
--- a/DEHPCommon/Services/ExchangeHistory/ExchangeHistoryService.cs
+++ b/DEHPCommon/Services/ExchangeHistory/ExchangeHistoryService.cs
@@ -107,9 +107,9 @@ public void Append(ParameterValueSetBase valueToUpdate, IValueSet newValue)
 
             var newValueString = $"{prefix} {newValueRepresentation} [{scale}]";
             var valueToUpdateString = $"{prefix} {oldValueRepresentation} [{scale}]";
-
+            
             this.Append($"Value: [{valueToUpdateString}] from Parameter [{parameter?.ModelCode()}] " +
-                                        $"has been updated to [{newValueString}]");
+                        $"has been updated to [{newValueString}]");
         }
 
         /// <summary>
@@ -180,8 +180,8 @@ private static string GetValueSetValueRepresentation(ParameterBase parameter, IV
                 var cols = parameter.ParameterType.NumberOfValues;
                 return $"[{valueSet.Computed.Count / cols}x{cols}]";
             }
-
-            return valueSet.Computed[0] ?? "-";
+            
+            return valueSet.Computed.DefaultIfEmpty("-").Aggregate((x, y) => $"{x},{y}");
         }
 
         /// <summary>
diff --git a/DEHPCommon/UserInterfaces/ViewModels/ObjectBrowserBaseViewModel.cs b/DEHPCommon/UserInterfaces/ViewModels/ObjectBrowserBaseViewModel.cs
index dde87b1..14e685d 100644
--- a/DEHPCommon/UserInterfaces/ViewModels/ObjectBrowserBaseViewModel.cs
+++ b/DEHPCommon/UserInterfaces/ViewModels/ObjectBrowserBaseViewModel.cs
@@ -189,6 +189,11 @@ public virtual void BuildTrees(Iteration iteration = null)
                     this.Things.Add(new ElementDefinitionsBrowserViewModel(iteration ?? this.HubController.OpenIteration, this.HubController.Session));
                 }
             }
+
+            if (this.Things.FirstOrDefault() is { } firstNode)
+            {
+                firstNode.IsExpanded = true;
+            }
         }
 
         /// <summary>