CFG file options

How can append the date to the export file name automatically everyday?

This is my current file:

[Output]
directory=C:\Export
filetype=xls
columntitles=1
skipRow=0
displayNULL=1
zipFinalResult=0
oneFilePerResultSet=0
appendTimestamp=0
[Job]
Product=Rapid SQL
Version=16.6.2.0
email=
netsend=
Description=BTT_TEST
[Database]
database0=
[Targets]
datasource0=BAXPROD
[Input]
file=c:\users\shumphries\documents\BTT voice usage query.sql