Save Report as PDF and send as attachment through Outlook - Compile Error

Good Morning,

I would like to use the following code that I found here on Experts Exchange.  I have altered some for my needs.  I get a compile error if I attempt to use this as an On Click Event.  I have also copied and pasted this in a module to use it as a Private Function.  I am not familiar with functions and how to call them or if you can even call them from an on click event.  The compile error occurs at the "DIM appoutlook as new outlook application.  I am using Access 2013.  I appreciate any help with this.  

Private Function SendPDFReport()
'Created by Helen Feddema 17-Jan-2010
'Last modified 17-Jan-2010
 
On Error GoTo ErrorHandler
 
   Dim appOutlook As New Outlook.Application
   Dim itm As Outlook.MailItem
   Dim strFileName As String
   Dim rpt As Access.Report
   Dim strReport As String
   Dim strCurrentPath As String
   Dim strFileNameAndPath As String
   
   strCurrentPath = "C:\users\13618\desktop\pdfs & " \ ""
   strReport = "R_UnitCheckByEmp"
   strFileName = Me.TxtFileName.pdf
   strFileNameAndPath = strCurrentPath & strFileName
   
   'Output report to PDF in current path
   DoCmd.OutputTo objecttype:=acOutputReport, _
      objectname:=strReport, _
      outputformat:=acFormatPDF, _
      outputfile:=strFileNameAndPath, _
      autostart:=False
   
   'Create new mail message and attach text file to it
   Set itm = appOutlook.CreateItem(olMailItem)
   With itm
      .To = "someone@xyz.com"
      .Subject = "Daily report"
      .Body = "Your message"
      .Attachments.Add strFileNameAndPath
      'To edit before sending
      .Display
      'To send automatically
      '.Send
   End With
   
ErrorHandlerExit:
   Exit Sub
 
ErrorHandler:
   MsgBox "Error No: " & Err.Number & "; Description: " & Err.Description
   Resume ErrorHandlerExit
 
End Function