question

I think if want to cross sign ,need now and previous
I think not need MAafter
How do you think??
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if ( (fasterMAnow > slowerMAnow) && (fasterMAprevious < slowerMAprevious) && (fasterMAafter > slowerMAafter))

I have no idea what you're talking about, but it looks like you're trying to code something for MetaTrader.

This should be posted in the MetaTrader forum, not the beginner forum. You might get some answers over there.