Does the EA require an open application?
Will EA run normally although the application is closed (not minimized)?

Thanks

You have to have opened the Metatrader and the EA attached to a chart.

Other option is to have a PC running 24/7 at a datacenter with intalled Metatrader. You can remote control the PC.

Hi,

EA must run on open application...it's not server side scripting like TP or SL it's client side..
so you must keep your MT4 open all the time to see it works

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Forex Indicators Collection

Thank you 4 answers.

I have one more question.

Is it still possible to trade manually althogh when EA is attached to the chart?

Yes, but the EA needs to have a magic number.

???
A what?

magic number is just a number. It is th term "magic". Just a number.

Imagine the following. You opened Metatrader, opened one chart and attached one EA to this chart. Then you opened the other chart and attached the other (or the same one) EA to that "other chart". And both EAs opened the orders. Then one EA wants to modify the order but does not know which one should be modified. So, magic number is just a number which every trade is having. And EA can recognize easy which one should be processed.

You don't need to do anyting with this manic numbers. When you see magic numbers' settings in EA so just use different numbers for every chart in one Metatrader. That's all.

my mistake..