New to Flex and I'm trying to write a custom DataRenderer for an area
chart to programatically set the fill color and add a data label.  I
tried extending AreaRenderer but it gave me an error.  My first step
in debugging that was to verify that I should in fact be extending
AreaRenderer.  In my mxml file I have:

<mx:AreaSeries yField="Field1" displayName="Some Field"
itemRenderer="mx.charts.renderers.AreaRenderer" />

and I get the following error:

ReferenceError: Error #1069: Property filteredCache not found on
mx.charts.series.items.AreaSeriesItem and there is no default value.
        at
mx.charts.renderers::AreaRenderer/mx.charts.renderers:AreaRenderer::updateDisplayList()
        at mx.skins::ProgrammaticSkin/validateDisplayList()
        at mx.managers::LayoutManager/::validateDisplayList()
        at mx.managers::LayoutManager/::doPhasedInstantiation()
        at Function/http://adobe.com/AS3/2006/builtin::apply()
        at mx.core::UIComponent/::callLaterDispatcher2()
        at mx.core::UIComponent/::callLaterDispatcher()

What am I doing wrong?

thanks,
Mark Haugen






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