How to get spot elevation values?

I think this evaluates the elevations at the control points of my Property Line polygon.

I am trying to calculate the average value of the spot coordinates and write that to a new level in the project for the average grade plane.

the “Type” selected is a custom type i created to show the elevation from the survey point:

I don’t think plugging in the toposolid was the right step either because it’s calculating the elevation of the bottom of the toposolid:


Moving the points up in Z above the surface didn’t help.

It appears I had to set the elevation to display Top elevation and now its working!


So the step I really need advice on is how to get this value into GH to calculate the average.

You can Get Element Parameters via the Element Parameter component.