Changing the font size only for specific show-text OSD item

[advice2020]

If you use the following setting --osd-font-size=<size> this changes the font size of all OSD text elements. I was wondering if there was a way to only change the font size for a specific show-text item only? So for example if you have a show-text OSD set to a specific hotkey, that it would only change that items font size and not any others.

Thank You

[guidocella]

https://mpv.io/manual/master/#command-interface-osd-ass-cc

e.g. show-text '${osd-ass-cc/0}{\fs20}foo'