Changing Outlook Calendar Appointment Subject from VB Code

I have the following code:
    Dim app As New Outlook.Application
    Dim ns As NameSpace
    Dim Calendar As MAPIFolder
    Dim Item As Object
    Set ns = app.GetNamespace("MAPI")
    Set Calendar = ns.GetDefaultFolder(olFolderCalendar)
    For Each Item In Calendar.Items
        Item.Subject = "*" + Item.Subject
    Next Item

From the Watch window I can see that it changes the item.subject field but it doesn't save it back to the appointment.  How do I get it to permanently update the Appointment's Subject?
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Helen FeddemaConnect With a Mentor Commented:
I would add a line to check the item type, and set a specific AppointmentItem variable in that case.  Then you have to close and save the modified item (no need for DoEvents).  Also, don't use reserved words like Calendar and Item as variable names, and use the ampersand instead of the plus sign for concatenaing.  Here is my modified code:
Public Sub UpdateAppts()

    Dim app As New Outlook.Application
    Dim ns As NameSpace
    Dim fldCalendar As MAPIFolder
    Dim itm As Object
    Dim appt As Outlook.AppointmentItem
    Set ns = app.GetNamespace("MAPI")
    Set fldCalendar = ns.GetDefaultFolder(olFolderCalendar)
    For Each itm In fldCalendar.Items
      If itm.Class = olAppointment Then
         Set appt = itm
         appt.Subject = "*" & appt.Subject
         appt.Close (olSave)
      End If
    Next itm

End Sub

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cacomputerguyAuthor Commented:
Worked perfectly.  Is there some way to change the label color of the appointment as well as the subject?  Thanks very much.
Helen FeddemaCommented:
This depends on the version.  In Outlook 2007 and 2010, colors can be associated with categories, so all you need to do it set the category (field name:  Categories) to a specific value, and then the appointment label will have that color.  For earlier versions, I don't think this is possible.
Helen FeddemaCommented:
Here is the Color Categories dialog
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