I'm developing a word application with cached data. The application can
modify the data with the cached attribute. When I save the document the data
seems to be updated, but if i close and reopen the document I got an old
version of the cached data.
For example I create a VSTO Word Project with a string with the cached
attribute. In the Startup event I save the document and in the BeforeSave
event I increment the data and show it. Like the code shown below:

Public Class ThisDocument
   <Cached()> Public TestString As String
   Private Sub ThisDocument_BeforeSave(ByVal sender As Object, ByVal e As
Microsoft.Office.Tools.Word.SaveEventArgs) Handles Me.BeforeSave
       If TestString Is Nothing Then
           TestString = "1"
       Else
           TestString = (CInt(TestString) + 1).ToString
       End If
       MsgBox(TestString)
   End Sub
   Private Sub ThisDocument_Startup(ByVal sender As Object, ByVal e As
System.EventArgs) Handles Me.Startup
       Me.Save()
   End Sub
   Private Sub ThisDocument_Shutdown(ByVal sender As Object, ByVal e As
System.EventArgs) Handles Me.Shutdown
   End Sub
End Class

If I open, close, reopen, reclose,... the word document the data shown is
correct.
But if I Save the document from word, the data seems to be correct, when i
close the document and reopen it the data is obsolete.

Can anyone help me?

Thanks in advanced,
Marchionni Daniele