Hi José,
The AddCustom axis has been moved to the NCartesianAxisCollection (as some axis collections do not support custom axes, with the same parameters). To add a custom axis to a cartesian chart you can use the following code:
Dim chart As NChart = NChartControl1.Charts(0)
Dim axis As NAxis
axis = CType(chart.Axes, NCartesianAxisCollection).AddCustomAxis(AxisOrientation.Vertical, AxisDockZone.TopLeft)
Hope this helps - let me know if you meet any problems...
Best regards,
Bob