[amibroker] RelStrength from the date

["tomczykd" <tomczykd@xxxxxxxxx>]

Hello,

I'm looking for help. How to write in AFL to caltulate RelStrength FROM date TO date:
from 01.01.2009 to 31.10.2009

Lot o AFL's use 

fvb = Status("firstvisiblebar"); 
or 
barvisible = Status("barvisible");
FVB = barvisible AND NOT Ref( barvisible, -1 );

DateSpan = EndValue(BarIndex()) - BeginValue(BarIndex());

Range = DateSpan ;
StartDate = BeginValue(BarIndex());
EndDate = EndValue(BarIndex());


In the chart we have from the first bar from left side. In this case when we change the window range, we receive another RS number.

Please help me.
Best regards.

Dominik



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