[amibroker] plotshapes help

["murthysuresh" <money@xxxxxxxxxxxxxx>]

the following plot shapes comamnds gives me results as seen in this 
screenshot.
http://screencast.com/t/rGJVivwx8
PlotShapes( IIf( (C>prevHourHigh) , shapeUpArrow +shapePositionAbove , 
shapeNone ),IIf( Hourly9ema>= 
Hourly20ema ,colorGreen,colorBrightGreen),5 ); 

however i want to increase the gap between the bar high and the arrow.  
how do i do it.



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