It is a Martingale money management system. You have to use very strict control over the lot size. No more than one micro (0.01) per 5K. To be extra safe, even more than that (one micro per 6-10K). When I did some sample backtests, I also got blow ups anytime I exceeded 5K per micro. Indeed, depending on which month you started the backtest, sometimes the account would blow at 5K per micro.
This is why a lot of people stay away from Martingale based systems. I still think this strategy has merit because it uses Martingale in combination with hedging but I am no where near where I would put it on a live account.
You need to update the data from the 'History Center' so you have all of the data on file. Goto the menu item Tools->History Center or just press F2. On the left side of the history center double-click on GBPUSD and then single-click on H1 and click on the 'Download' button. It may take a while to download all of the missing data. The other thing you need to do is to check 'Use date' in the strategy tester and select what start date and what end date you want. With Forex Hacked running on the H1 chart, you should easily be able to run a 10+ year backtest. That is what I did.
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