svg export special characters

Hi,

I want to create axis label with special (german) character and export it as svg

the Title of the axis should be "Länge [m]"

I tried:

plotModel.Axes.Add(new LinearAxis
            {
                IsZoomEnabled = false,
                IsPanEnabled = false,
                Title = "Länge [m]",
                Position = AxisPosition.Bottom,
                MajorGridlineStyle = LineStyle.Solid,
                Minimum = auswertungX.Min,
                Maximum = auswertungX.Max
            });

this will result in <text>L&#228;nge [m]</text>

with HTML syntax:

"Länge [m]"

it will result in <text>L&auml;nge [m]</text>

and with no special syntag:

"Länge [m]"

it will result in <text>L??nge [m]</text>