Many GraphicsLayer problem?

[FranciscoRodriguez1]

Hi
I work with:
<esri:GraphicsLayer ID="GraphicsLayerFind" x:Name="FindG"/>
                        <esri:GraphicsLayer ID="GraphicsLayerZone" x:Name="ZoneG"/>
                        <esri:GraphicsLayer ID="GraphicsLayerPoligono" x:Name="PolygonG"/>
                        <esri:GraphicsLayer ID="MyGraphicsLayer" x:Name="PointG"/>
In MyGraphicsLayer draw only point, GraphicsLayerPoligono draw Polygon. The problem is when clustering MyGraphicsLayer. When i clic de cluster GraphicsLayer_MouseLeftButtonDown dont work.

How I know what layer  recive clic.

[JenniferNery]

This is related thread: http://forums.arcgis.com/threads/22348-FlareClusterer-how-to-get-the-graphic-clicked