_luafix.DoStr("while not stopped do   sleep(999)   end"; 

while (_stopped) { Sleep(999);

int lua_main(lua_State*st)
{
            //_luafix.DoStr("while not stopped do   sleep(999)   end";
      while (_stopped) { Sleep(999);  
   return 1;
}

function  main()
   while not stopped do   sleep(1000)   end
end

function OnQuote(class_code, sec_code)
        tb=getQuoteLevel2(class_code, sec_code)

   for i=1,tb.bid_count,1 do
            b = tb.bid[i].price
            q = tb.bid[i].quantity
       end
   for i=1,tb.offer_count,1 do
            b = tb.bid[i].price   << на эту строку ругается "test.lua:43: attempt to index field '?' (a nil value)"
       q = tb.bid[i].quantity
      end
end

test.lua:43: attempt to index field '?' (a nil value)

typedef map<string, string> ROW;
typedef map<int, ROW> TABL;

int lua_OnQuote(lua_State *st)
{
   try
   {
      int top = lua_gettop(st);
      if (top == 0) return 0;

      string sec_code = lua_tostring(st, -1);// qlua.ToString(-1);   // код бумаги
      string class_code = lua_tostring(st, -2);// qlua.ToString(-2);// код класса

      //Quote quote = qlua.getQuoteLevel2(class_code, sec_code);
      top = lua_gettop(st);
      lua_getglobal(st, "getQuoteLevel2");
      lua_pushstring(st, class_code.c_str());
      lua_pushstring(st, sec_code.c_str());
      lua_pcall(st, 2, 1, 0);

      int top2 = lua_gettop(st);
      lua_pushnil(st);
      string key; // ключ

      int bid_count;
      int offer_count;
      TABL bid; // массив bid
      TABL offer; // массиы offer
      
      while (lua_next(st, top2) != 0) {
         int type = lua_type(st, -1);
         if (type == LUA_TNUMBER) key = to_string(lua_tointeger(st, -2));
         else key = lua_tostring(st, -2);

         type = lua_type(st, -1);
         switch (type)
         {
         case LUA_TSTRING:
            if (key == "bid_count") bid_count = lua_tointeger(st, -1);
            else offer_count = lua_tointeger(st, -1);
            break;
         case LUA_TTABLE:
            int   top3 = lua_gettop(st);
            int len;
            if (key == "bid") len = bid_count;
            else len = offer_count;

            for (int j = 1; j <= len; j++)
            {
               lua_rawgeti(st, top3, j);
               // получаем ячейки стакана
               int top4 = lua_gettop(st);
               lua_pushnil(st);
               ROW row;
               while (lua_next(st, top4) != 0) {
                  string key2 = lua_tostring(st, -2);
                  row[key2] = lua_tostring(st, -1);
                  lua_pop(st, 1);
               }
               if (key == "bid") bid[j] = row;   
               else offer[j] = row;
               lua_pop(st, 1);
            }
            break;
         }
         lua_pop(st, 1);
      }
      lua_pop(st, 1);
      if (0 != top - lua_gettop(st) - 1) LOG_ERROR << "Lua stack is changed!\n getTop=" << lua_gettop(st);
   }
   catch (...)
   {
      LOG_ERROR << "Ошибка в стакане";
      //lua_unlock(_luafix.lua);
   }


   return 0;
}

int lua_OnQuote(lua_State *st)
{

   int top = _luafix.GetTop();
   if (top == 0) return 0;
   string sec_code = _luafix.ToString(-1);   // код бумаги
   string class_code = _luafix.ToString(-2);// код класса

   TABLEQuote quote = _luafix.getQuoteLevel2(class_code, sec_code);

   _luafix.Pop(1);

   _luafix.sendQuote(quote); // здесь отправка стакана в торговый робот

   return 0;
}