The number of a data point in a series

Assume this:
I have plotted XY data in a chart. Call the value series 'MySeries', and assume its "SeriesCollection" number is 20.
If, in a VisualBasic macro, I do this:

Sheets("MyGraphs").Select
ActiveChart.SeriesCollection(20).Points(84).Select

the 84-th point in 'MySeries' in the chart on sheet 'MyGraphs' is selected.

But how do I do "the reverse"?
I.e. assume I select a point in the plot of 'MySeries' on the chart on sheet 'MyGraphs', how do I get the number in the data series 'MySeries'?
Assume the sheet "MyData" contains 3 columns:
The X-values of 'MySeries'
The Y-values of 'MySeries'
A comment to each XY pair
Let's assume I have created a button in or close to the graph area. I want the service handler to this button, in sheet "MyGraphs",
to select sheet "MyData" and the comment cell on the row where the X and Y for the selected point are.
This will require a function we could call

getNumberInSeries(SelectedPt as Point) As Integer
The procedure would be like (of course there is "Dim SelectedPoint As Point", "Dim PointNumber As Integer" in the declaration section):
   Set SelectedPoint = Selection
   PointNumber = getNumberInSeries(SelectedPoint)
   ...

What could 'getNumberInSeries' look like?

use SelectedPoint.Name, which return something like S1P1 series index and point index.

(Andy,)

... Only that it should (certainly) be:

Dim SelectedPoint as Point
Dim SeiesAndPointnumber As String

SelectedPoint = Selection
SeiesAndPointnumber = SelectedPoint.DataLabel.Name

You had missed '.DataLabel".
'SeriesAndPointnumber' takes on a value like
"Text S16P211".

/dindea
Extracting the point number as an Integer is "peanuts"...

I "said too much".
The approach with "SelectedPoint.DataLabel.Name" works only when the point has a data label (SelectedPoint.HasDataLabel = True).
For a point without a data label (SelectedPoint.HasDataLabel = False) it does not work. "SelectedPoint.DataLabel.Name" results in the error "Unable to get the Name property ..."
(and SelectedPoint.DataLabel.Name = <Unable to get the Name property ...>).
So, how do I do it on a point without a data label?

"SelectedPoint.Name" yields the error "Object variable or With block variable not set".

/dindea