Make Individual Serial for Print documents in Word - vba

Question

Dear Readers
I am trying to make individual Serial numbers ( incrementing number) for some Forms in Microsoft Word, so we can track each one of them much simpler between people.
I used this link and it did work,
but it needs always running Macro and I couldn't figure out how to make it automatic with just a simple Ctrl+P shortcut, so I used this second link for that reason,
finally, it looked so great but there is a problem since the second link is a just "before Print" code, there is always one extra print at the end since the Printing process starts exactly after macro ended. any cancel print process code out there?
how can I overcome this one?
Codes under the document
Private Sub Document_Open()
Register_Event_Handler
End Sub
Codes under the Module
Dim X As New EventClassModule
Sub Register_Event_Handler()
Set X.App = Word.Application
End Sub
Codes under the class
Public WithEvents App As Word.Application
Private Sub App_DocumentBeforePrint(ByVal Doc As Document, Cancel As Boolean)
' Run code directly inside this Sub OR
MsgBox "Before Print"
' Call another Sub here, note, Sub and Module name can't match
Call FilePrint
' See https://www.freesoftwareservers.com/wiki/compile-error-expected-variable-or-procedure-not-module-macros-microsoft-office-29982732.html
End Sub
and finally Codes of FilePrint section as a Module
Sub FilePrint()
Dim i As Long, j As Long
With ActiveDocument
j = CLng(InputBox("How many copies to print?", "Print Copies"))
For i = 1 To j
With .CustomDocumentProperties("Counter")
.Value = .Value + 1
End With
.Fields.Update
ActiveDocument.PrintOut Copies:=1
Next
.Save
End With
End Sub