R viseme not working for "latin" R-sounds

Hi guys,

this is about the "R" viseme and sound. I'm pretty sure that there are quite some international "R" sounds missing, for the "R" viseme doesn't show up when I use Spanish, Italian or French words, while it does with the English "R".

"R" viseme in English is working.

- as in "work"

- or "further".

"R" viseme in Spanish is not working

- as in "Tarragona"

- or "Torero".

Also, the French version, as in…

• irresponsable[iʁ(ː)ɛspɔ̃sabl] ('irresponsible')
• formidable[fːɔʁmidabl] ('terrific')
• Il faut l'attraper [ilfol(ː)atχape] ('it must be caught')

… does not seem to work.

Any chance that more "R" sounds than just the English versions will be added to the sounds that ChAn recognizes and then linked to the "R"?