Smartest way to modify an INI file

What would be the smartest way to modify one value in a Windows INI file? I'm receiving ZIP files that contain translatable content and a project definition file (PRJ), that's actually something like a Windows INI file.

I'd like to change one value: IsExchange from 0 to 1:

Should I open the PRJ file, copy the content to the clipboard and do a Find and Replace? Or are there smarter ways?

INI file format is an informal standard for configuration of files for the some platforms or software.

I would use a shell script. Something like this:

perl -p -i -e 's/IsExchange=0/IsExchange=1/' "filepath"

You can also do it within Keyboard Maestro:

Thank you! For now I’ll use the Perl solution.