I must be brain dead Hans

If I understand correctly, I need to put a check by Dynamic PTY to turn it on. Then I have to enter \R"H:\My Documents\Now Playing\Filename.txt" somewhere to tell ST where to look for the file and how to use it. My question is :
Exactly where do I enter "\R"H:\My Documents\Now Playing\Filename.txt" " ? I'm looking for a field to paste that into but I don't see one.
Dynamic PTY is a flag in RDS itself, that doesn't work with these files! Inserting files is only for PS and RT indeed. For PTY use the parameter scheduler as I wrote before.