yes Popov, he is referring to the first graph with ? mark.  obviously more than 15%

I zoomed the image.

The reference is about 1 072 000. Max acceptable value is 1 232 8000.
I see in the image that max balance is somewhere about 1 219 590.

It is 1% below the limit.

When you report bugs, please refer to facts!

The balance line pattern has no connection with the profit.
You can see the formula in the AccountStatistics.cs file at "C:\Program Files\Forex Strategy Builder Pro\User Files\Code" folder.

private double CalculateMaxSmoothBalanceDeviationPercent(IBacktester backtester)
{
    var firstBar = backtester.Strategy.FirstBar;
    var bars = backtester.DataSet.Bars;
    const int checkPoints = 100;
    var netBalance = NetMoneyBalance;
    double startBalance = backtester.Profile.InitialAccount;
    double maxDeviationPercent = 0;

    for (var i = 1; i <= checkPoints; i++)
    {
        var bar = (int) (firstBar + i*((bars - firstBar)/(checkPoints + 1.0)));
        var checkPointBalance = backtester.MoneyBalance(bar);
        var targetBalance = startBalance + i*(netBalance - startBalance)/(checkPoints + 1.0);
        var deviationPercent = Math.Abs((targetBalance - checkPointBalance)/targetBalance);
        if (maxDeviationPercent < deviationPercent)
            maxDeviationPercent = deviationPercent;
    }

    return maxDeviationPercent;
}

It is described in the Acceptance Criteria article in the user guide.

The balance line pattern and the Net profit are completely different criteria that can work together. This is the exact example in the guide.

I agree, can we have another type of non-linear filter that measures deviation from the ideal linear graph, it would be useful to search for stability and consistency in EA's performance. 

As a layman (without referring to the guide), I would have made the same assumption as Geektrader too.

Hi Mr. Popov,

I´ve tried to change the filter to 1% in the strategy repository to filter strategies that don´t match the non-linear balance pattern AFTERWARDS. I´ve checked "Strategies fulfil Acceptance Criteria", and set the filter to 1%, still it filters nothing in the repository. It seems like the filter has no effect in the repository on already generated strategies at all, even if the "Strategies fulfil Acceptance Criteria" is checked. Can you confirm this as a bug?

Thanks. I´ve been trying hard, but can´t seem to get it to work there. Then again it might be another fault I am doing that I am missing. But good to hear you are looking into it.

Wow, this bug is STILL not fixed, almost exactly 2 years after I had reported it! I´ve been showing FSB Pro to a friend today and was sure this was fixed meanwhile as it is a critical point, but still the "Strategies fulfil Acceptance Criteria" is being ignored for strategies in the Repository. It works during generating strategies, but still broken for the Repository and not just for the "Filter non-linear balance pattern", but also all other items. For example, go and raise the "Minimum count of trades" in Control Panel -> Acceptance Criteria to 1 million(!), then go back to the Repository and see that it filters out nothing still, although none of my strategies has 1 million trades!

I was very disappointed to see that this bug still exists after 2 years, this doesn´t make a good impression on the software at all and my friend who was ready to purchase it, decide to not do so after seeing this kind of slowness / ignorance on obvious bugs on functionality that he needs to work. That´s rather sad for everyone involved. Hope you will change your business practices in the future, Popov, not fixing a bug for 2 years is a clear killer for potential new customers, as you can see.

Independent from this bug which still seems to be there, I have created my own version of a more meaningful balance line deviation calculation now, here it is for download: https://forexsb.com/forum/post/50155/#p50155