Synth Building Blocks package compatible with RNBO for JS ?

Hi, I'm both new to RNBO and Max.

When I'm writing a RNBO/JS/JSON web page not involving SBB, everything works fine (ie: white noise)

But as soon as I'm using SBB it doesn't: it runs (logs), but no sound. Haven't found any special information anywhere about it. Is it supposed to work as is ? It there a SBB JS package I'm suppose to include? Any special export option?

Thanks a lot!