All-in-Plus- System is a martingale. This is a very interesting EA as most of the traders stay away with it but traders with a drive loves it as it can make big profits. A few points to remember if you are using this EA so that you may be aware and know when to stay out.
This EA is very profitable for small pips like 5 so you can get small profit and use martingale for closing your trade. The level that you should stay away is level 10 as it is very risky. You can find very large drawdowns and yet you can have small profit.
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But then, if this EA is ran with 21 to 3, that means it is not a trend but a market range, you can find good profits on some chosen days. It is better to place filters to the news so that it would not change suddenly when there are big news happening and thus will protect your account for sudden drawdowns.