EXS 24 Logic Sampler Users Group

Hi everybody, I've tried posting this on the Logic Users group a couple of
times but my posts don't seem to go through over there, maybe someone here
can help me.  I installed the Version 5 upgrade last night but have yet to
get the Evoc 20 working successfully.  I'm trying to trigger it using an
existing audio track.  So far I've tried selecting the audio track I want to
use from the Side Chain pull down but that didn't work.  Anybody know how to
do this?  Is there any documentation on how to use this thing anywhere?
I've tried Infoweb and the archives to this list and of course the Emagic
website without any luck.    Thanks for any help,  Jon Esler