can you please make an update for this old topic? I compared the code from a fresh new strategy with the old one from the EA updated here and it seems to me that the coding is different.

I am very interested (as you know ) in using percentages instead of lots and I haven't found a solution yet.

I tried to use FSB because of the percentage, but still I have more other problems there. With Expert Advisor I miss only this function, otherwise it is PERFECT !

thanks
Sebastian

Yes, it is possible. You can use the follow function (taken from the FSB Pro scripts):

double NormalizeEntrySize(double size)
{
    double minlot  = MarketInfo(_Symbol, MODE_MINLOT);
    double lotstep = MarketInfo(_Symbol, MODE_LOTSTEP);

    if (size <= minlot)
        return (minlot);

    int steps = (int) MathRound((size - minlot) / lotstep);
    size = minlot + steps * lotstep;

    if (size >= Maximum_Lots)
        size = Maximum_Lots;

    size = NormalizeDouble(size, digits);

    return (size);
}

Put this function somewhere in the file and use it like that:

Entry_Amount = NormalizeEntrySize(Entry_Amount);

Is it posible to make the EA detect minimum alllowed lot size and maximum lotsize automatically?
I think the code check the minlot size but what to do if the lotsize reached the maxium allowed from broker?
Is this code correct?

double NormalizeEntrySize(double size) {
   double minlot  = MarketInfo(_Symbol, MODE_MINLOT);
   double maxlot  = MarketInfo(_Symbol, MODE_MAXLOT);
   double lotstep = MarketInfo(_Symbol, MODE_LOTSTEP);

   if (size <= minlot)
       return (minlot);

   int steps = (int) MathRound((size - minlot) / lotstep);
   size = minlot + steps * lotstep;

   if (size >= maxlot || size >=Maximum_Lots)
       size = maxlot;
       
   size = NormalizeDouble(size, digits);   

   return (size);
}   

yonkuro

Thanks for asking these features and developing solutions...

These are most helpful... I had been asking a couple of them and now see in this thread that you are months ahead of me..

Thank you again!

No problem Sir...

Thanks for asking these features and developing solutions...

These are most helpful... I had been asking a couple of them and now see in this thread that you are months ahead of me..

Thank you again!

The EA is attached.

double NormalizeEntrySize(double size)
{
    double minlot  = MarketInfo(_Symbol, MODE_MINLOT);
    double lotstep = MarketInfo(_Symbol, MODE_LOTSTEP);

    if (size <= minlot)
        return (minlot);

    int steps = (int) MathRound((size - minlot) / lotstep);
    size = minlot + steps * lotstep;

    if (size >= Maximum_Lots)
        size = Maximum_Lots;

    size = NormalizeDouble(size, digits);

    return (size);
}

Put this function somewhere in the file and use it like that:

Entry_Amount = NormalizeEntrySize(Entry_Amount);

    Entry_Amount=MathMax(Entry_Amount,0.1);
    Entry_Amount=NormalizeDouble(Entry_Amount,1);

This must work. You don't need to set additional increment value because it is most probably 0.1 and when the NormalizeDouble(Entry_Amount,1) function round it to the first decimal digit, it will work fine.

But how do I make the EA to detect the minimum allowed increment automatically?

The backtest show this error : OrderSend error 131, after I searched in Google, it's said the error is due to broker doesn't allow micro lot increment.

I test it using fixed lot version with 0.11 lot and it give the same error, but when I change the lot size to round number such as 0.1 or 0.2, it works well. So I'm sure the problem is the allowed increment