[ORD] Item Type / Asset Manager Expression to get Mesh Start & End Co-ordinates

Hi all,

I have been using Item Type / Asset Manager Expressions to report the start and end co-ordinate of Meshes in my ORD models as required for the data deliverables of a current BIM project.

If the element is a simple Mesh (with no Civil Feature Definition) it reports the co-ordinates fine using the expression (with some substring adjustments to split X and Y and a dgn resolution unit adjustment):

This.GetElement().GetDisplayString("Vertices[0]") for start point and This.GetElement().GetDisplayString("Vertices[" & (This.GetElement().GetDisplayString("VertexCount") - 1) & "]") for end point.

The issue I have is that if the element is featurized the expression no longer works and reports the failure value.

Does anyone know how I can get this same value for a Mesh with a Feature Definition?