sorry for subject. I couldn't explain it enough. My fx broker does not support metatrader 5 but I want to do some backtest with their symbols like dow jones but mt5 demo account does not have dowjones symbol. Of course I can do it with mt4 but mt4 can not use parallel processing and as I read, mt5 can. my backtests takes too much time and for now I installed 8 different metatrader for same fx broker and run my backtests with these 8 different mt4. this is hell of a burden for me. I want to get rid of this. is it possible that I can use mt5 for my backtests ?