diff --git a/RevitElementBipChecker/Viewmodel/ParameterData.cs b/RevitElementBipChecker/Viewmodel/ParameterData.cs
index 399a59b..5e10f9a 100644
--- a/RevitElementBipChecker/Viewmodel/ParameterData.cs
+++ b/RevitElementBipChecker/Viewmodel/ParameterData.cs
@@ -16,8 +16,7 @@ public ParameterData(Parameter parameter,Document doc,bool isinstance=true)
             this.Type = parameter.GetParameterType();
             this.ReadWrite = parameter.IsReadWrite();
             this.Value = parameter.GetValue();
-            this.StringValue = (StorageType.ElementId == parameter.StorageType)
-                ? parameter.GetParameterValue2(doc) : parameter.AsValueString();
+            this.StringValue = parameter.AsValueString() ?? "";
             this.Shared = parameter.Shared();
             this.GUID = parameter.Guid();
             this.TypeOrInstance = isinstance?"Instance":"Type";