Windows 10: How to define relative path in .reg file?

Hello. so I am working on a game and I also use a third party launcher.


Apparently this launcher has an issue with disabling the play button if a registry entry doesn't have an ending slash.


e.g. C:\Program Files x86\Genesis\ vs C:\Program Files x86\Genesis


I've brought this up with them but they dont exactly jump at an issue unless it breaks the editor.


I wanted to see if maybe I could use a .reg file to add the needed slash to the end of the file path.


Thing is, its not always going to be the same file path for every user.


So, I wanted to know if there was a way to define a relative file path within the .reg file


e.g. ...\Genesis\ or something similar


Thank you for looking into this. :

:)