enlarging the comma

[info]

Hello-

i just tried to do the 

\override BreathingSign#text = \markup { \fontsize #8 { \musicglyph
#"comma" } }

in a 

  \version "2.16.1"

and it would compile but the breathe didn't get bigger.

Will or can this work in 2.16.1?

Or is there a different thing that will?

I was excited that the thread was started as I was working on a cello suite and felt that the sign should be bigger but it doesn't matter what fontsize I put it nothing changed.

Thanks

Jay