KeepBiggestSplit

Sub KeepBiggestSplit(SplitSurface As Variant)
Dim Pt1Meas 'As Measurable
Set Pt1Meas = TheSPAWorkbench.GetMeasurable(SplitSurface)
Dim AArea As Double 
AArea = Pt1Meas.Area

SplitSurface.Orientation = 1
MyPart.UpdateObject SplitSurface
Dim Pt2Meas 'As Measurable
Set Pt2Meas = TheSPAWorkbench.GetMeasurable(SplitSurface)
Dim BArea As Double
BArea = Pt2Meas.Area

If AArea > BArea Then
    SplitSurface.Orientation = -1
End If
End Sub