Hi again
When you mentioned a "Variable", I rather assumed you meant
to imply a RoboHelp variable. With those, you configure the
variable when you generate the help. Not after the fact. What you
seem to be wanting is some form of an externally accessed resource
where the end user might influence changes after you have produced
the help?
If that is correct, you may be interested in fellow Adobe
Community Expert Peter Grainge's site.
Click
here
Cheers... Rick