Transfer to breakeven for a few positions

The primer says “To
ensure that you get fresh data about the position, it is recommended to call the positionselect function() immediately
before applying for them. ” I’ll leave it, it won’t get any worse.

In general, he got confused in three birches. For hedged accounts, you need to sort through the pickets. The correct code is below.

void BreakEvenPoint()
{
   if(BreakEven == 0)
      return;
   for(int i=PositionsTotal()-1; i>=0; i--)  // returns the number of current positions
      if(iPosition.SelectByIndex(i))         // selects the position by index for further access to its properties
         if(iPosition.Symbol() == iSymbol.Name() && iPosition.Magic() == MagicNumber)
         {
            if(PositionSelect(iSymbol.Name())==true)
            {
               if(PositionGetInteger(POSITION_TYPE)==POSITION_TYPE_BUY)
               {
                  if(iSymbol.Bid() > (iPosition.PriceOpen() + BreakEven * iSymbol.Point()))
                  {
                     double sl = NormalizeDouble(iPosition.PriceOpen() + iSprd, iSymbol.Digits());
                     double tp = iPosition.TakeProfit();
                     ulong  iTicket = PositionGetTicket(i);
                     if(iPosition.StopLoss() < sl || iPosition.StopLoss()==0.0)
                     {
                        //--- modify position
                        if(iTrade.PositionModify(iTicket, sl, tp))
                           printf("Long position by %s to be modified", iSymbol.Name());
                        else
                        {
                           printf("Error modifying position by %s : '%s'", iSymbol.Name(), iTrade.ResultComment());
                           printf("Modify parameters : SL=%f,TP=%f", sl, tp);
                        }
                        //--- modified and must exit from expert
                     }
                  }
               }
               if(PositionGetInteger(POSITION_TYPE)==POSITION_TYPE_SELL)
               {
                  if(iPosition.PriceOpen() > (iSymbol.Ask() - BreakEven * iSymbol.Point()))
                  {
                     double sl=NormalizeDouble(iPosition.PriceOpen() - iSprd, iSymbol.Digits());
                     double tp=iPosition.TakeProfit();
                     ulong  iTicket = PositionGetTicket(i);
                     if(iPosition.StopLoss() > sl || iPosition.StopLoss()==0.0)
                     {
                        //--- modify position
                        if(iTrade.PositionModify(iTicket,sl,tp))
                           printf("Short position by %s to be modified", iSymbol.Name());
                        else
                        {
                           printf("Error modifying position by %s : '%s'", iSymbol.Name(), iTrade.ResultComment());
                           printf("Modify parameters : SL=%f,TP=%f", sl, tp);
                        }
                        //--- modified and must exit from expert
                     }
                  }
               }
            }
         }    
}