Adding shapes to Rad chart graphs

[Phani]

Private Sub EnhanceDataPointsForSeries(chSeries As ChartSeries)<br>        chSeries.Appearance.PointMark.Dimensions.AutoSize = False<br>        chSeries.Appearance.PointMark.Dimensions.Width = 10<br>        chSeries.Appearance.PointMark.Dimensions.Height = 10<br>        chSeries.Appearance.PointMark.FillStyle.MainColor = System.Drawing.Color.Blue<br>        chSeries.Appearance.PointMark.Visible = True        <br>    End Sub

So I have a series to which I am enhancing the point. I was looking for different type of shapes but I could not get Diamond shape or any other ones. So how do I get it?

Also i was going through some examples on telerik site and tried to use this 

DefaultSeriesDefinition  for my rad chart. It does not even come up in the listed properties? Why is that so? Let me know if you have any questions