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Different robots with different programming languages.when you buy it,just try to demo trade with it first.try to discover the maximum&minimum number of pips it can catch on each trade.if out of 7 trades it wins 5,then it is a good robot.majority of this robot has their rules.you must 1st understand the rules&also discipline yourself with the rules.never forget to update the robots because they behave irrationally when they are not updated.
My own advice for you is that instead of you spending your time on robots why dont spend time to develop your own trading system&forget about robot?
