ASP.NET, SQL Server, WPF, C#, VB.NET

Hi,  
  
I'm not a programmer, but I do create macros in Word from time to time. I  
  
just created one that I hoped would allow me, by pressing F3, to Accept the  
  
Selected Change when using Word's Track Change feature. When I try to run the  
  
macro, I get the following:  
  
Run-time error 509; this command is not available.  
  
I don't know how to debug this code (or any other). The code is as follows:  
  
Sub AcceptChange()  
  
'  
  
' AcceptChange Macro  
  
' Macro recorded 5/26/2006 by Joy Sobeck  
  
'  
  
Selection.Range.Revisions.AcceptAll  
  
WordBasic.AcceptChangesSelected  
  
End Sub  
  
Can anyone help?  
  
Much appreciated.  
  
--  
  
The Monk