On Error Resume Next
Dim acadapp As AcadApplication
Set acadapp = GetObject(, "autocad.application")
If Err Then
Err.Clear
Set acadapp = CreateObject("autocad.application")
acadapp.Visible = True
If Err Then
MsgBox Err.Description
Exit Sub
End If
End If
Dim acaddoc As AcadDocument
Set acaddoc = acadapp.ActiveDocument
acaddoc.sendcommand "_UCS" & vbCr & "y" & vbCr & ""