Question : Excel VBA minus one month

Hi Experts

I have this macro which adds a MS Outlook appointment based on the selected Excel Cell (which is a date). It works OK.

As you will see, the following line sets the appointment start to be at 8am, 31 days before the ActiveCell date.

.Start = ActiveCell.Value - 31 + TimeValue("08:00:00")

My question is, how can I change that to be ONE MONTH before the ActiveCell date rather than 31 days? That way, if the ActiveCell date is 24/3/2011, .Start will be 24/2/2011.

Thanks

Will

         
           
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          Sub Set_Outlook_Reminder()
Dim objOutlook As Object
Dim objAppt As Object
Dim objNamespace As Object
Dim objFolder As Object
 
Worksheets("Customer Database").Activate
 
    Set objOutlook = CreateObject("Outlook.Application")
    
    Set objNamespace = objOutlook.GetNamespace("MAPI")
    Set objFolder = objNamespace.GetDefaultFolder(9)
    Set objAppt = objFolder.Items.Add 'create task item
    With objAppt
        .Start = ActiveCell.Value - 31 + TimeValue("08:00:00")
        .End = .Start + TimeValue("00:30:00")
        .Subject = "Invoice " + ActiveCell.Offset(-2, 0).Value
        .Location = ""
        .Body = ""
        .BusyStatus = olBusy
        .ReminderMinutesBeforeStart = 120
        .ReminderSet = True
        .Save
    End With

Set objAppt = Nothing
Set objFolder = Nothing
Set objNamespace = Nothing
Set objOutlook = Nothing

MsgBox "Successfully Added to Outlook"

End Sub

           
         

Answer : Excel VBA minus one month

To get the date of "one month ago", use this:

                       
         
           
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             Sub Set_Outlook_Reminder()
Dim objOutlook As Object
Dim objAppt As Object
Dim objNamespace As Object
Dim objFolder As Object
 
Worksheets("Customer Database").Activate
 
    Set objOutlook = CreateObject("Outlook.Application")
    
    Set objNamespace = objOutlook.GetNamespace("MAPI")
    Set objFolder = objNamespace.GetDefaultFolder(9)
    Set objAppt = objFolder.Items.Add 'create task item
    With objAppt
        .Start = DateAdd("m",1,ActiveCell.Value) + TimeValue("08:00:00")
        .End = .Start + TimeValue("00:30:00")
        .Subject = "Invoice " + ActiveCell.Offset(-2, 0).Value
        .Location = ""
        .Body = ""
        .BusyStatus = olBusy
        .ReminderMinutesBeforeStart = 120
        .ReminderSet = True
        .Save
    End With

Set objAppt = Nothing
Set objFolder = Nothing
Set objNamespace = Nothing
Set objOutlook = Nothing

MsgBox "Successfully Added to Outlook"

End Sub

           
         