InsertFeatureTreeFolder2 Usage Question (VBA)

I need to create a "Facilities" folder in an assembly model.  I want the folder to be always above the "mates" folder when created...  Ive done this before creating a folder above or below a selected part, but i get nothing wile selecting "mates" feature...

Dim swApp As Object

Dim Part As Object

Dim boolstatus As Boolean

Dim longstatus As Long, longwarnings As Long

Sub main()

Set swApp = Application.SldWorks

Set Part = swApp.ActiveDoc

boolstatus = Part.Extension.SelectByID2("Mates", "MATEGROUPS", 0, 0, 0, False, 0, Nothing, 0)

Dim myFeature As Object

Set myFeature = Part.FeatureManager.InsertFeatureTreeFolder2(swFeatureTreeFolderType_e.swFeatureTreeFolder_EmptyBefore)

boolstatus = Part.SelectedFeatureProperties(0, 0, 0, 0, 0, 0, 0, 1, 0, "Facilities")

End Sub

SolidworksApi macros