Excel 2007 Query Table refresh date

I'm trying to get the refresh date for a query table within Excel 2007 to use as a timestamp but am not getting any output when trying the following within the sheet containing the query table.

Private Sub QueryTable_AfterRefresh(Success As Boolean)
    If Success Then
        ' Query completed successfully
        Range("M1").Value = ListObject(1).QueryTable.RefreshDate
    Else
        ' Query failed or was cancelled
    End If
End Sub

If I insert a msgbox, it doesn't get launched either so it looks like I'm missing something.

Thanks