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Minimum lot size below 0.01?

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Hi all, 

If my EA decides that based on my money management, my lot size should be 0.003, what will happen as my minimum is 0.01 lots?


Thanks

error
Shawn Ong :

Hi all, 

If my EA decides that based on my money management, my lot size should be 0.003, what will happen as my minimum is 0.01 lots?


Thanks


There will be an error. Before sending a sales order, you need to check the volume, for example:

//+------------------------------------------------------------------+
//| Lot Check                                                        |
//+------------------------------------------------------------------+
double LotCheck(double lots)
  {
//--- calculate maximum volume
   double volume=NormalizeDouble(lots,2);
   double stepvol=m_symbol.LotsStep();
   if(stepvol>0.0)
      volume=stepvol*MathFloor(volume/stepvol);
//---
   double minvol=m_symbol.LotsMin();
   if(volume<minvol)
      volume=0.0;
//---
   double maxvol=m_symbol.LotsMax();
   if(volume>maxvol)
      volume=maxvol;
   return(volume);
  }

Here m_symbol is the CSymbolInfo object.

    • You place the stop where it needs to be - where the reason for the trade is no longer valid. E.g. trading a support bounce the stop goes below the support.
    • Account Balance * percent/100 = RISK = OrderLots * (|OrderOpenPrice - OrderStopLoss| * DeltaPerLot + CommissionPerLot) (Note OOP-OSL includes the SPREAD, and DeltaPerLot is usually around $10/pip but it takes account of the exchange rates of the pair vs. your account currency.)
    • Do NOT use TickValue by itself - DeltaPerLot
    • You must normalize lots properly and check against min and max.
    • You must also check FreeMargin to avoid stop out
  2. If your size is below minimum, then either you can't take the trade, must risk more than you want, or find a broker that has mini/micro lot sizes (10K/1K.)
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