VOLUME Greater than Previous 3 day VOLUME for Amibroker (AFL)

//        VOLUME Greater than Previous 3 day VOLUME 


AddTextColumn( FullName(), "Name");
AddColumn( Close, "Close" );
AddColumn( Volume, "Volume" );


AddColumn( Ref( V, -1 ), "VOL -1" );
AddColumn( Ref( V, -2 ), "VOL -2" );
AddColumn( Ref( V, -3 ), "VOL -3" );
AddColumn( Volume, "Volume" );


V2DAY = Ref( V, -1 ) + Ref( V, -2 ) ;
V3DAY = Ref( V, -1 ) + Ref( V, -2 ) + Ref( V, -3 );


Filter = V > V3DAY ;

Buy= V > V3DAY ;