diff --git a/Upsilon/BaseTypes/ScriptTable/ScriptTable.cs b/Upsilon/BaseTypes/ScriptTable/ScriptTable.cs
index 8246a0a..ce8222b 100644
--- a/Upsilon/BaseTypes/ScriptTable/ScriptTable.cs
+++ b/Upsilon/BaseTypes/ScriptTable/ScriptTable.cs
@@ -27,13 +27,18 @@ namespace Upsilon.BaseTypes.ScriptTable
             {
                 return o;
             }
-            diagnostics.LogError("Cannot find member 's' on Table", span);
+            diagnostics.LogError($"Cannot find member '{s}' on Table", span);
             return new ScriptNull();
         }
 
         public void Set(Diagnostics diagnostics, TextSpan span, ScriptType index, ScriptType value)
         {
             var s = index.ToString();
+            if (value.Type == Type.Nil)
+            {
+                EvaluationScope.Delete(s);
+                return;
+            }
             EvaluationScope.CreateLocal(new VariableSymbol(s, value.Type, false), value);
         }
 
diff --git a/Upsilon/Evaluator/EvaluationScope.cs b/Upsilon/Evaluator/EvaluationScope.cs
index ce4ddc9..4efcc69 100644
--- a/Upsilon/Evaluator/EvaluationScope.cs
+++ b/Upsilon/Evaluator/EvaluationScope.cs
@@ -59,6 +59,16 @@ namespace Upsilon.Evaluator
             Variables[symbol.Name] = value;
         }
 
+        public void Delete(VariableSymbol symbol)
+        {
+            Variables.Remove(symbol.Name);
+        }
+
+        public void Delete(string name)
+        {
+            Variables.Remove(name);
+        }
+
 
         public bool TryGet(VariableSymbol symbol, out ScriptType obj)
         {