diff --git a/src/modules/Elsa.Workflows.Management/Providers/DefaultExpressionDescriptorProvider.cs b/src/modules/Elsa.Workflows.Management/Providers/DefaultExpressionDescriptorProvider.cs
index dd434f19f0..df80d1ce98 100644
--- a/src/modules/Elsa.Workflows.Management/Providers/DefaultExpressionDescriptorProvider.cs
+++ b/src/modules/Elsa.Workflows.Management/Providers/DefaultExpressionDescriptorProvider.cs
@@ -39,7 +39,7 @@ private ExpressionDescriptor CreateLiteralDescriptor()
                     JsonValueKind.Number => elementValue.GetDecimal(),
                     JsonValueKind.True => true,
                     JsonValueKind.False => false,
-                    _ => v.GetString()
+                    _ => v.ToString()
                 });
 
                 return new Expression("Literal", value);