[amibroker] AFL for 20% Filter

["score177" <score177@xxxxxxxxx>]

Hi All,
 
Can someone help with a % filter. I would like to change this AFL to 
one that gives me all avancers > 20% over the last 30 trading days.

Filter = C > 20 AND C < 80 AND V > 10000
AND C==HHV(C,10);
AddColumn (C, "Close");
AddColumn (V, "Vol");


I would like to show the actual % increse also in a new column. I do 
not need HHV, just the % increase above 20%, for the last 30 trading 
days.

any help appreciated. 

TIA....



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