I use a NRectangularCallout together with a 2d-LineChart (just a couple of X-Y pairs) - the NRectangularCallout configuration:

    m_RectangularCallout.ArrowLength = new NLength(10, NRelativeUnit.ParentPercentage);
      m_RectangularCallout.StrokeStyle.Width = new NLength(1);  //disable Callout border: = 0
      m_RectangularCallout.UseAutomaticSize = true;
      m_RectangularCallout.Orientation = iLabelPos;
      m_RectangularCallout.Text = oLine.m_sLabel;

      _NevronChart.Panels.Add(m_RectangularCallout);

      // Anchor the callout to data point #0
      NDataPointAnchor anchor = new NDataPointAnchor(line, 0, ContentAlignment.MiddleCenter, StringAlignment.Center);
      m_RectangularCallout.Anchor = anchor;

This works as expected. But now I want to change the anchor for the Callout - I tried the following:

1- Approach: Anchor at DataPoint 2
 NDataPointAnchor anchor = new NDataPointAnchor(oNevronLineSeries, 1, ContentAlignment.MiddleCenter, StringAlignment.Center);

           oCallout.RecalcLayout(NevronChart.View.Context);

      oChart.Chart.RecalcLayout(NevronChart.View.Context);
      oChart.Chart.Refresh();

Unfortunatly, nothing happens at all. So how can I change the anchor for the Callout?
 
2. Approach: Using a ScaleAnchor:

           oCallout.Anchor = new NScalePointAnchor(oChart.Chart, 0, 0, 0, AxisValueAnchorMode.Show, new NVector3DD(42348.931761342596, 0.0, 0));

           oCallout.RecalcLayout(NevronChart.View.Context);
        
      oChart.Chart.RecalcLayout(NevronChart.View.Context);
      oChart.Chart.Refresh();

But same as approach 1: Nothing happens at all. So how do I change the anchor to a NScalePointAnchor?

Thanks for the help,
Best regards, Joern