Microtonal accidentals not showing

What I do is the following in write mode:

  • I write 3 D’s as eight notes
  • Select the middle and go to key signatures
  • Change tonality system to 24-EDO
  • Select quarter tone sharp (sharp sign with arrow down)

Nothing happens.

If I double click the middle D and do the following three points again, I get the quarter tone sharp sound but still no accidental.

How can I get it to show the microtonal accidental?

The tonality system is attached to the key signature. You have to add a key signature. See https://www.steinberg.net/forums/viewtopic.php?t=138839#p748088

Wow. Didn’t expect that way of doing it – thank you!