Selecting Topo points

Hi,
You should connect the Topography.Points output to List input in List.FilterBooleanMask. At the moment you are getting the elevation, not the points.
Apart from that, I think you can move the points with MovePoints method in a Python script. I will give a try and get back to you

edit: apparently it’s not possible with Python, I gave a try as well and always got error:

At this point I would you suggest to use @Nick_Curtis indications