Construct a plane on the CAD from a dialog

[[Er...]]

Hi everyone,

I would like to create a script that prompts the user to select a planar patch on the CAD.
Then the script regain take control and create a plane on the patch programmatically.

Or, as an alternative, if would you to build a generalized Construct > Auto Plane (Nominal)... dialog in a script, in such a way that the user can do the point selection on the CAD.

Any help would be appreciated! Thanks a lot in advance.

regards,

Erik