Staff.OttavaBracket.direction

[Gianmaria Lari]

My apologies if the question is trivial.

I would like to print the ottavaBracket up the staff but even if I specify
the direction of ottava bracket it doesn't work.  Here it is a not working
example.

\version "2.21.1"
\fixed c'' {
  \override Staff.OttavaBracket.direction = #UP
  \ottava #-1 c d e f
}


Any suggestions?

Thanks, g.