diff --git a/libs/lua/LuaBridge/detail/CFunctions.h b/libs/lua/LuaBridge/detail/CFunctions.h
index 9a14c0892f..7da46807df 100644
--- a/libs/lua/LuaBridge/detail/CFunctions.h
+++ b/libs/lua/LuaBridge/detail/CFunctions.h
@@ -1401,6 +1401,16 @@ struct CFunc
     return 2;
   }
 
+  template <class T, class C>
+  static int setInsert (lua_State *L)
+  {
+    C* const t = Userdata::get <C> (L, 1, false);
+    T const * const v = Userdata::get <T> (L, 2, true);
+    auto rv = t->insert (*v);
+    Stack <bool>::push (L, rv.second);
+    return 1;
+  }
+
   // generate iterator
   template <class T, class C>
   static int setIter (lua_State *L)
diff --git a/libs/lua/LuaBridge/detail/Namespace.h b/libs/lua/LuaBridge/detail/Namespace.h
index 0190076d61..c39a7f0e3e 100644
--- a/libs/lua/LuaBridge/detail/Namespace.h
+++ b/libs/lua/LuaBridge/detail/Namespace.h
@@ -1904,6 +1904,9 @@ public:
       .addFunction ("clear", (void (LT::*)())&LT::clear)
       .addFunction ("empty", &LT::empty)
       .addFunction ("size", &LT::size)
+#if 0 // needs work for AutomationTypeSet (T is-a enum not a class instance)
+      .addExtCFunction ("insert", &CFunc::setInsert<T, LT>)
+#endif
       .addExtCFunction ("iter", &CFunc::setIter<T, LT>)
       .addExtCFunction ("table", &CFunc::setToTable<T, LT>);
   }