Secondary y-axis to auto scale not working: throwing Method 'Axes' of object '_Chart' fail

Hi,
I have a about 12 charts in my worksheet. About 6 charts (Clustered column charts) of them have primary & secondary axis.
I have a macro which align the primary & secondary axes to zero. So far good.
The input of my chart changes and I want to be able to reset the axes value to auto and have a macro for that.
The code works fine for the primary y-axis, but I run into the Method 'Axes' of object '_Chart' failed for the secondary y-axis (highlighted in red and underline in the code below).
How can this be fixed?

Any ideas about how this can be fixed would be very much appreciated.

'Reset the axes values to Automatic
Sub ResetScalesToAuto()


    Dim oChrtObj As ChartObject
    For Each oChrtObj In Worksheets("ChangeDrivers").ChartObjects
      With oChrtObj.Chart
        With .Axes(2, 1)
          .MinimumScaleIsAuto = True
          .MaximumScaleIsAuto = True
        End With

          With .Axes(2, 2)
          .MinimumScaleIsAuto = True
          .MaximumScaleIsAuto = True
        End With
        End With
          Next oChrtObj
End Sub

Thanks