I get error OrderModify error 1 in Strategy Tester mt4. Can someone help me fix this?

[Daniel Sastraamidjaja]

So, I get this error in strategy tester mt4:

Beside of the error, the strategy tester works really fine. But I'm afraid if I using this code in real account, this error would disrupt the trading. 

Can someone help me to fix this?

This is the code I write:

extern int    Magic1 = 100;
extern int    Magic2 = 200;
extern int    min_gapsize = 1;
extern double lotsize_gap = 0.01;
extern double StopLoss = 1000;
extern ENUM_TIMEFRAMES    TF = PERIOD_CURRENT;
double ot;
//----
datetime order_time = 0;
//+------------------------------------------------------------------+
//| expert initialization function                                   |
//+------------------------------------------------------------------+
int init()
  {
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| expert deinitialization function                                 |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| expert start function                                            |
//+------------------------------------------------------------------+
int start()
  {

// Defining the variables to decide.
   double current_openprice = iOpen(Symbol(), TF, 0);
   double previous_highprice = iHigh(Symbol(), TF, 1);
   double previous_lowprice = iLow(Symbol(), TF, 1);
   double point_gap = MarketInfo(Symbol(), MODE_POINT);
   int spread_gap = MarketInfo(Symbol(), MODE_SPREAD);
   datetime current_time = iTime(Symbol(), TF, 0);
// catching the gap on sell upper gap
   if(current_openprice > previous_highprice + (min_gapsize + spread_gap)*point_gap &&
      current_time != order_time)
     {
       int ticket = OrderSend(Symbol(), OP_SELL, lotsize_gap, Bid, 0, 0, 
                              previous_highprice + spread_gap*point_gap, 
                              "", Magic1, 0, Red);
       order_time = iTime(Symbol(), PERIOD_CURRENT, 0);
       //----
       if(ticket < 0)
         {
           Print("OrderSend failed with error #", GetLastError());
         }
     }
//catching the gap on buy down gap
   if(current_openprice < previous_lowprice - (min_gapsize + spread_gap)*point_gap &&
      current_time != order_time)
     {
       ticket = OrderSend(Symbol(), OP_BUY, lotsize_gap, Ask, 0, 0, 
                          previous_lowprice - spread_gap*point_gap,
                          "", Magic2, 0, Green);
                          
       order_time = iTime(Symbol(), PERIOD_CURRENT, 0);
       if(ticket < 0)
         {
           Print("OrderSend failed with error #", GetLastError());
         }
     }
//----
   ot=OrdersTotal();
   for(int cnt=ot-1;cnt>=0;cnt--) 
   {
      OrderSelect(cnt, SELECT_BY_POS, MODE_TRADES);
      
      if (OrderSymbol()==Symbol() && OrderType()==OP_BUY)
         {
             ModifyStopLoss(OrderOpenPrice() - StopLoss*Point);
         } 
            
      if (OrderSymbol()==Symbol() && OrderType()==OP_SELL)

         {    
            ModifyStopLoss(OrderOpenPrice() + StopLoss*Point);
         } 
                
   }
//------------------------------------------------------------------+
   return(0);
  }


//----------------------ModifyStopLoss---------------------+  
void ModifyStopLoss(double xStopLoss) 
{
   bool modSL;
   modSL=OrderModify(OrderTicket(),OrderOpenPrice(),xStopLoss,OrderTakeProfit(),0,CLR_NONE);
}  
//+------------------------------------------------------------------+

[Keith Watford]

Don't keep trying to modify the SL over and over again. Just do it once.

In future please post in the correct section

I will move your topic to the MQL4 and Metatrader 4 section.

[Daniel Sastraamidjaja]

Keith Watford:

Don't keep trying to modify the SL over and over again. Just do it once.

In future please post in the correct section

I will move your topic to the MQL4 and Metatrader 4 section.

Thank you, sorry for being in wrong section, I'm still newbie here.

Anyway, can you point out where is the error in the code, and how to fixed it? 

[Keith Watford]

Daniel Sastraamidjaja:

Anyway, can you point out where is the error in the code, and how to fixed it? 

Keith Watford:

Don't keep trying to modify the SL over and over again. Just do it once.

       if(ticket < 0)
         {
           Print("OrderSend failed with error #", GetLastError());
         }
       else
         {
           //Modify SL
         }

[William Roeder]

ERR_NO_RESULT

You	Server
Change the SL to X	It is at X!
Change the SL to X	It is at X!
Change the SL to X	You are insane

Insanity: doing the same thing over and over again and expecting different results.
          Unknown

Compute the new value, then check that you are moving the existing value at least a tick.

PIP, Point, or Tick are all different in general.
          What is a TICK? - MQL4 programming forum