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Lee Smith wrote:
That seems to work, until I try to create another table at index 2:

(append)

 tableIndex++;
 lua_pushnumber(L, tableIndex);
 lua_newtable(L); // push 1

 lua_pushstring(L, "item3"); // push 1
 lua_pushstring(L, "value (item 3)"); // push 1
 lua_settable(L, -3); // pop 2

 lua_pushstring(L, "item4"); // push 1
 lua_pushstring(L, "value (item 4)"); // push 1
 lua_settable(L, -3); // pop 2

 lua_pushvalue(L, -1); // push 1
 lua_setglobal(L, "3rdtable"); // pop 1

Just move the instruction << lua_setglobal(L, "testtable"); >> to the end, becoming:

  lua_pushvalue(L, -1); // push 1
  lua_setglobal(L, "3rdtable"); // pop 1
  lua_setglobal(L, "testtable");

Don't forget to _move_ it, not copy.

--rb