VB.net: hello world na linha de comandos

Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.EditorInput
Imports Autodesk.AutoCAD.Runtime

Public Class 1
    <CommandMethod("olá")> _
    Public Sub Proj1()
        Dim ed As Editor = Application.DocumentManager.MdiActiveDocument.Editor
        ed.WriteMessage("Hello World")

    End Sub
End Class