Diadem recuperate cursor coordinate using script

As a new comer on this site, I say hello to everyone.

My question is simple:

How can I get the values (X, Y) displayed on the curve of my report 2D graph using the "add curve coordinate" (right click on the curve) as input for a script, values that I use for further computation in this scirpt (basically the difference between Xs)?

I join a picture of that.

Moreover, I want to work with the Report and not the View.

I hope you can help me :)

To us all,

Louval