Automatically Open Outlook Attachment - VBA

Private Declare Function GetShortPathName Lib "kernel32" _
 Alias "GetShortPathNameA" (ByVal lpszLongPath As String, _
 ByVal lpszShortPath As String, ByVal cchBuffer As Long) As Long
 
 Private Sub objItems_ItemAdd(ByVal Item As Object)
    Dim objMail As Outlook.MailItem
    Dim objWsShell As Object
    Dim strTempFolder As String
    Dim objAttachments As Outlook.Attachments
    Dim objAttachment As Attachment
    Dim strFileName As String
    Dim Subject As String
    
    Subject = Item.Subject
    'If Subject Like "*SubTest*" Then
 
    If Item.Class = olMail Then
       Set objMail = Item
       'Change sender email address
       'If objMail.SenderEmailAddress = "boss@datanumen.com" Then
          Set objWShell = CreateObject("WScript.Shell")
          strTempFolder = Environ("Temp") & "\"
 
          Set objWsShell = CreateObject("WScript.Shell")
          Set objAttachments = objMail.Attachments
          If objAttachments.Count > 0 Then
             For Each objAttachment In objAttachments
                 strFileName = objAttachment.DisplayName
                 On Error Resume Next
                 Kill strTempFolder & strFileName
                 On Error GoTo 0
 
                 'Save the attachment
                 objAttachment.SaveAsFile strTempFolder & strFileName
 
                 'Open the attachment
                 strFileName = GetShortFileName(strTempFolder & strFileName)
                 On Error Resume Next
                 objWsShell.Run strFileName
             Next
          'End If
        End If
    End If
    'End If
End Sub

Function GetShortFileName(ByVal FullPath As String) As String
    Dim lAns As Long
    Dim sAns As String
    Dim iLen As Integer
 
    On Error Resume Next

    If Dir(FullPath) <> "" Then
       sAns = Space(255)
       lAns = GetShortPathName(FullPath, sAns, 255)
       GetShortFileName = Left(sAns, lAns)
    End If
End Function

'Open the attachment
                 vbs = (Chr(34) & "\\Server\Excel\" & "\runmacro.vbs " & Chr(34))
                 strFileName = GetShortFileName(strTempFolder & strFileName)
                 macro = "MacroName"
                 xlam = Environ("APPDATA") & "\Microsoft\Excel\XLSTART\Add-In.xlam"
                 On Error Resume Next
                 objWsShell.Run vbs & " " & strFileName & " " & macro & " " & xlam
                 objMail.UnRead = False