Hi Paolo, > The ids must be: foobar_1, foobar_2 etc.
Can they be foobar.1, foobar.2, etc. instead? Lilypond has a nice built-in mechanism for that naming/pointer convention. Hope that helps! Kieren. ________________________________ Kieren MacMillan, composer (he/him/his) ‣ website: www.kierenmacmillan.info ‣ email: i...@kierenmacmillan.info