Marco to create an email from Excel

Hello:

I use the following macro to insert cells from a sheet in a workbook and create an email.  I wish to add an attachment to the email.  I added .InsertFile which seems correct but it does not pick up the file.  I have tried using

.InsertFile = "C:\MyFile.pdf" as well creating a variable

Dim FiletoSend As String
FiletoSend = "C:\MyFile.pdf"

Which I realize is the same thing.  I tried dropping the .pdf and still no luck.

Below is the entire code

FYI I did not write this code some really smart person did.

Sub Mail_Selection_Range_Outlook_Body()

' Don't forget to copy the function RangetoHTML in the module.
' Working in Office 2000-2007
    Dim rng As Range
    Dim rng1 As Range
    Dim rng2 As Range
    Dim FiletoSend As String
       
    Dim EAddress As String
   
    'EMAIL ADDRESS
    EAddress = Sheets("Sheet1").Cells(1, 1).Value
   
    'File Attachment
    FiletoSend = "C:\MyFile.pdf"
   
    Dim EMessage As String
    EMessage = "Test Email"
   
    Dim OutApp As Object
    Dim OutMail As Object
 
    Set rng = Nothing
    On Error Resume Next
    'Only the visible cells in the selection
    Set rng = Sheets("Sheet1").Range("C4:K26")
   
       
    'Selection.SpecialCells (xlCellTypeVisible)
    'You can also use a range if you want
    'Set rng = Sheets("YourSheet").Range("D4:D12").SpecialCells(xlCellTypeVisible)
    On Error GoTo 0
 
    If rng Is Nothing Then
        MsgBox "The selection is not a range or the sheet is protected" & _
               vbNewLine & "please correct and try again.", vbOKOnly
        Exit Sub
    End If
 
    With Application
        .EnableEvents = False
        .ScreenUpdating = False
    End With
 
    Set OutApp = CreateObject("Outlook.Application")
    OutApp.Session.Logon
    Set OutMail = OutApp.CreateItem(0)
 
    On Error Resume Next
    With OutMail
        .To = EAddress
        .CC = ""
        .BCC = ""
        .Subject = EMessage
        .HTMLBody = RangetoHTML(rng)
        .InsertFile = FiletoSend
        .Send   'or use .Display
    End With
    On Error GoTo 0
 
    With Application
        .EnableEvents = True
        .ScreenUpdating = True
    End With
 
    Set OutMail = Nothing
    Set OutApp = Nothing
   
       
End Sub