Email me if you would like to practise back testing a EA. I have several I can email to you for back testing and demo. I have:
SPike, martigingale and martingale with MACD, Lotscalper tweeked and then my super macd.They are all my design but one and that one is public domain and I tweeked it.None of these BOT have been run on a real account.
Have fun testing, if You get a winning set , let me know.