Changing Screenshot Save Directory

I am attempting to change the directory for my screenshots to the same directory as the save files on packaged games. The screenshots are used as images for the save files. So it would be nice to have everything in one place.

In a nutshell, my problem is, in the project settings → Engine/General Settings → Screenshots/Game Screenshot Save Directory, I’m not quite sure what to put in there that will point to the users save directory that is currently located in %appdatalocal%.