Set the position(s) of a SustainPedal spanned in multiple staves

[Paolo Prete]

Hello,

If the same SustainPedal belongs to more than one staff, how can I override its position only for a chosen staff? For example:

 {
   \set Staff.pedalSustainStyle = #'mixed  
   c'2\sustainOn c'
   c'1 \break 

   % DOESN'T WORK (I'm trying to override Y-offset only for the second staff)
   \override Staff.SustainPedalLineSpanner.Y-offset = #'-16
   c'2 c'\sustainOff
   c'1
}

Thanks!

Best,

P