Reply To: Set the opacity of a XTDataseries

I check I have the 8.0 version, and with this code, my lines appears not transparent.

c1:XYDataSeries
PlotElementLoaded="XYDataSeries_PlotElementLoaded"
ItemsSource="{Binding Data}"
Label="{Binding Converter={StaticResource TagToLabel}}"
XValueBinding="{Binding TimeStamp}"
ValueBinding="{Binding Value}"
AxisX="ax"
ConnectionStrokeThickness="{Binding IsSelected, Converter={StaticResource SelectedToThickness}}"
Opacity="5″

I also try to set it in the PlotElementLoaded, and it’s not working too