[RESOLVED] commondialog help

[popodc]

Private Sub cmdUpload_Click()
    With CommonDialog1
        .FileName = "*.xls"
        .Filter = "*.xls"
        .ShowOpen
        uploadfile = .FileName
    End With
    Save_BillingStatus
End Sub

how do i code if i try to open the dialogbox then i cancel the button?? it must not go to the Save_billingstatus function.. anyhelp?