lua_settable
lua_settable(L, -4); /* set new table into field */
LUA_API void (lua_settable) (lua_State *L, int idx);
lua_settable(state, 1);
(void) lua_settable(state, -3);
(void) lua_settable(state, -3);
(void) lua_settable(state, -3);
(void) lua_settable(state, -3);
lua_settable(state, -3);