How do I draw an outline on a specific wedge of a flex pie chart?

I want to have a different coloured stroke (outline) used on the pie wedge under the mouse from the outline used on the other wedges.

The PieSeriesItem referenced by the mouseover event doesn't have a stroke parameter, and it looks like it is an all or nothing deal with the outline colour on the whole pie.

开发者_开发百科Is there any way of specifying the stroke parameter on a specific wedge?

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It looks like this is done by specifying an itemRenderer on the PieSeries. The default is the WedgeItemRenderer, so subclassing will allow overriding the line definition.