为什么不出现ALERT那个窗口？

[DAVIDLIU07]

#property copyright "Copyright 2018, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict
#property script_show_inputs
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
extern int TakeProfit =100;
extern int StopLoss = 100;

void OnStart()
  {
   double TakeProfitLevel;
   double StopLossLevel;
   
   TakeProfitLevel = Bid + TakeProfit*Point; //point=0.00001
   StopLossLevel = Bid - StopLoss*Point;
   
   /*
   ticket # can return:
      ticket #; OR
      -1 (if OrderSend failed)
   
   */
   
   int ticket;
   
   ticket = OrderSend("EURUSD", OP_BUY, 1.0, Ask, 10, StopLossLevel, TakeProfitLevel, "My EA!");
     
   if(ticket < 0)
   {
      Alert("Error!");
   }
   
   else
   {
      Alert("Your ticket # is:" + string(ticket));
   }
   
   
   }

[Yupeng Xiao]

 Alert("Your ticket # is:" + string(ticket));

改成：

 Alert("Your ticket # is:" , ticket);

或者：

Alert("Your ticket # is:" , IntegerToString(ticket));