Slow update from server..

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Hi,

I'm currently working on an Expert Advisor. But my code is verry
sloooow so i don't want metatrader from updating every tick from
server. I want it to read every 30 seconds. I have put this line but
whenever metatrader updates its data it automatically refreshes screen
data.. Metatrader is not reloading indicator data with code below but i
don't want to update the objects (i mean screen objects, trendlines etc etc) either.

if (CurTime()-timelastupdate < 600 && Period()==lasttimeframe)
return (0);

Thanks in advance.
 
It's better to run the EA once when new bar starts.
"MQL4: Completed Bar"
 
Thank you.. :)
it works much better..
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