[2005] leave instance set to Nothing on failure of constructor

[trisuglow]

How would I achieve setting an instance of one of my classes to Nothing if the constructor fails?

Public Class MyClass

    Public Sub New( Parm As Integer )
        If Parm < 1 Then 'make the instance Nothing
    End Sub

End Class

In the calling code doing Dim obj As New MyClass( 0 ) should leave obj set to Nothing.