tagOptions and sorting...

[Hibiki]

Hi everyone!

I'm making my first steps in the world of MinimServer and I'm trying to have a sorting order on "Artists" based on reverse name.

As I'm listening a lot of classical music, I'm using Album Artist and Artist fields for popular music while I'm using COMPOSER, PERFORMER, SOLOISTS (as backup for PERFORMER), ORCHESTRA, CONDUCTOR, CHOIR ...etc.

COMPOSER has its COMPOSERSORT field with for example:
COMPOSER = Ludwig van Beethoven (1770-1827)
COMPOSERSORT = Beethoven, Ludwig van

For PERFORMER :
PERFORMER = Arthur Rubinstein (piano)
PERFORMERSORT = Rubinstein, Arthur

I try to use the following for the tagOptions field: composer.sortTags={composersort}.
I got the following error: "incorrect tag 'composer' for option 'sortTags' in property 'tagOptions'.

I try with different case and I got always the same message.

In property 'indexTags', I have the following (as I'm french, I use french translation for tags):
Artist:Artiste de l'album, Date, Genre, All Artists:Tous les artistes, Composer:Compositeur, Composition:Œuvre musicale, Conductor:Chef d'orchestre, Performer:Interprètes, Grouping, Style, Periodériode

Where am I wrong?

Thanks