How can I truncate a footer to the first 15 characters?  Word 2010 vba

I am splitting a word document with multiple letters to individual files.  The text I want to use as the filename is in the first 14 characters of the footer.
I need to truncate the footer to name the files.  
I am very new to vba, any help would be greatly appreciated.
Below is my code :

Sub BreakOnPVOHSection()

Dim letter As Range
Dim fname As Range
Dim target As Document
Dim strFileName As String
Dim strID As String
    
 ' Used to set criteria for moving through the document by section.
 Application.Browser.target = wdBrowseSection

'A mailmerge document ends with a section break next page.
 For i = 1 To ((ActiveDocument.Sections.Count) - 1)
   
     Set fname = ActiveDocument.Sections(i).Footers(wdHeaderFooterPrimary).Range
     fname.End = fname.End - 1

   
      'Select and copy the section text to the clipboard
      ActiveDocument.Bookmarks("\Section").Range.Copy

      'Create a new document to paste text from clipboard.
      Documents.Add
      Selection.Paste
         
 '        ActiveDocument.Bookmarks = Mid(fname, 0, 12)
 
       ChangeFileOpenDirectory "\\vcuhshmo\users\lheaton\bpa"
       docnum = docnum + 1
       ActiveDocument.SaveAs fileName:=fname.Text & ".docx"

       ActiveDocument.Close savechanges:=wdDoNotSaveChanges
      ' Move the selection to the next section in the document
      Application.Browser.Next
   
   Next i
     
 ActiveDocument.Close savechanges:=wdDoNotSaveChanges
End Sub

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