Select or change BuildingPad host topography

[l.virone]

Hello Everyone,

I'm wondering if it's possible to select (during creation) or change a building pad host topography.

The method create doesn't allow you to choose the host :

public static BuildingPad Create(
	Document document,
	ElementId buildingPadTypeId,
	ElementId levelId,
	IList<CurveLoop> curveLoops
)

And the property "AssociatedTopographySurfaceId" is read only :

public ElementId AssociatedTopographySurfaceId { get; }

I'm asking because sometimes when i have 2 topography superimposed (the existing one and the projected one) and i don't know what is the process in Revit to select which one will be the host, and i'm wondering if i can control it using code.

Tks,

Virone Lorenzo