Missing StrokeThickness on MapPolyline of Bing.Maps Windows 8 -

I use polyline to draw circles on the Bing Maps (metro app), but aliasing appears on Maps It's not easy, it's not easy. I think there is no stroke in it.

How can I solve it? Thanks MapSpace Layer Size = New MapSpace (); MapPolinelinePolyline = new mapPollline (); Polyline.Locations = DrawMapsCircle (location, 1000); Polyline.Color = Windows.UI.Colors.Red; Polyline With = 1; ShapeLayer.Shapes.Add (polyline); Maps.ShapeLayers.Add (shapeLayer);

Try increasing the width of the polyline

  Polyline With = 5;