I have got a strange result.

At first I have got this result at XAU/USD symbol.
Win 0 %.

After that, I just *10 for Stop/TakeProfit and the strategy showed positive.

For example, What *10 means is:

old one:
TakeProfit = 50*PIP;
Stop = 4*ATR(100);

new one:
TakeProfit = 500*PIP;
Stop = 40*ATR(100);


Could you explain why this happened?

With a bigger stop loss you get more winners.

Yes, But I had consistent losses which are many trades of 1000's.
So I thought that those trades were loss because spreads and multiply the values.

Whether a trade wins or loses does not depend on its size. The spread is multiplied with the size as well.

However, stop and takeprofit has a large effect on the win rate, and with too tight stops you'll get 0% winners with any strategy.

OK, I see now that it is not a bug.
Will do more tests.