I'll test various solutions to make the symbol name clean before the export. It is a problem that MT doesn't support regular expressions and UTF and I have to use code that "smells".

The general solution is to remove all characters that are not alphabet characters or digits.

Firstly wishing you all a happy, healthy and very prosperous New Year! : )

I'm having a problem exporting Real Account data from my broker to try out the Generator in EA Studio - which I see appears to require .json files.

- I'm curious how/if it differs from the Generator in FSB Pro. I have watched the Tutorials - "Create a Strategy that Profits for 6 Months" and "5. Generating Expert Advisors - EA Studio User Guide" - so have done a little homework and some trial and error 'process of elimination' attempts before asking here..

EA Studio Data Export.mq4 - doesn't work on my broker's Real account data but works fine on a Demo account's data.

The Currency Pair symbol names on the Real account display in the MT4 'Market Watch panel' as e.g. EURUSD.. vs. in the Demo account EURUSD - with no dots. The corresponding .hst files in the MT4/History folder are named this way too:
On a Real Account: EURUSD..60.hst and Demo Account: EURUSD60.hst

I was helped in the past to learn how to easily resolve this problem when manually exporting files into FSB Pro as .cvs files: they simply need to be renamed to remove the 2 x extra dots.

So, the only thing I can think of is the Data Export script doesn't recognize the .hst files named with the 2 x extra dots?

I'm not a programmer.. so looking through the source code - I can't easily see anything I can change regarding this.
- perhaps there is some way to easily resolve this e.g. if I can be shown how to make a small alteration to the source code?
e.g. here maybe?

{
    RefreshRates();
    for (int p = 0; p < ArraySize(periods); p++)
    {
        string fileName = _Symbol + PeriodToStr(periods[p]) + ".json";
        string data     = GetSymbolData(_Symbol, periods[p]);
        SaveFile(fileName, data);
    }

(I would prefer to use my broker's Real Account data because I've noticed [my] systems perform worse/differently on Real vs. Demo account data, for whatever reasons...)

Any advice much appreciated.

Thank you.