Problem wirh FaceWall.Create

[AndrewButenko]

Hello! I have problem to create facewall. 

When I do 

 FaceWall.Create(document, t, WallLocationLine.CoreExterior, f.Reference)

then process of work continue, but never finish. I think it happened because my reference is incorrect.

I take reference from geometry 

Dim op As New Options
op.ComputeReferences = True
op.IncludeNonVisibleObjects = True

Dim ge As GeometryElement = Instance.Geometry(op)
For Each sol In ge.ToList()
If sol.GetType Is GetType(Solid) Then
Dim s As Solid = sol

Dim f As Face = s.Faces(0)

In reference which I have  (f.Reference ) GlobalPoints=nothing. 

When I take reference in other way

Dim r as reference= uidoc.Selection.PickObject(Selection.ObjectType.Element)

GlobalPoints is not nothing and all work. How can I get reference with GlobalPoints<>nothing but without PickObject?

[RPTHOMAS108]

From RevitAPI.chm:

"Reference.GlobalPoint Property
The position on which the reference is hit. "

i.e. if you've picked it the global point is the point at which you picked it. If you have retrieved it from element geometry then you've not picked it so has no GlobalPoint property set.

I assume you are picking the face of a mass and not just any face. Check FaceWall.IsValidReferenceForFaceWall.

"The reference must represent a face of a massing instance, and must be planar, and its normal must not be vertical or horizontal."

Last part is a bit confusing because if the normal is horizontal then the wall would be vertical and you can create those in the UI. I assume they mean ...(face not horizontal).