Line Chart Legend Icon Problem in Composite Chart

this is a bit more complicated but here you go:

protected void UltraChart1_FillSceneGraph(object sender, FillSceneGraphEventArgs e)
    {
        PrimitiveCollection primitivesToAdd = new PrimitiveCollection();
        PrimitiveCollection primitivesToRemove = new PrimitiveCollection();

        ChartLayerCollection layers = this.UltraChart1.CompositeChart.Legends[0].ChartLayers;
        int currentLayerIndex = 0;
        ChartLayerAppearance currentLayer = layers[currentLayerIndex];
        LineChartAppearance lineApp = currentLayer.ChartTypeAppearance as LineChartAppearance;
        int seriesCounter = 0;

        foreach (Primitive p in e.SceneGraph)
        {
            if (p.Path != null && p.Path.IndexOf("Legend") != -1)
            {
                Polyline pL = p as Polyline;
                if (pL != null)
                {
                    // we found a polyline in the legend. let's replace it.
                    Symbol sym = new Symbol();
                    // get the centerpoint of the polyline
                    sym.point = new Point((pL.points[0].point.X + pL.points[pL.points.Length - 1].point.X) / 2, (pL.points[0].point.Y + pL.points[pL.points.Length - 1].point.Y) / 2);
                    // get the correct icon
                    sym.icon = lineApp.LineAppearances[pL.Row].IconAppearance.Icon;
                    sym.PE = pL.PE;
                    primitivesToAdd.Add(sym);
                    primitivesToRemove.Add(pL);
                    seriesCounter++;
                    if (seriesCounter >= currentLayer.Series.Count && layers.Count > currentLayerIndex + 1)
                    {
                        currentLayerIndex++;
                        currentLayer = layers[currentLayerIndex];
                        lineApp = currentLayer.ChartTypeAppearance as LineChartAppearance;
                        seriesCounter = 0;
                    }
                }
            }
        }
        foreach (Primitive p in primitivesToRemove)
        {
            e.SceneGraph.Remove(p);
        }
        e.SceneGraph.AddRange(primitivesToAdd.ToArray());
    }