Sounds crazy, I used a wiki page Saturday and spent 5 hours trying to find it again so I can edit and add to it but I cannot. Since it’s so hard to find I will add links to it in other pages. It may be LUA or SOFIA or ESL related. I found a page that had the names of variables I could get into a LUA program triggered by: hook event="custom" subclass="sofia::unregister" script=“….. There was a section for unregistered (and others) that list them like: username: …. from_user: ... I used them here: local username = event:getHeader("username"); local from_user = event:getHeader("from-user"); If anyone knows the page please point me to it. I found an item missing from the page and was going to edit the page and add it (missing user-agent for unregister event). I found this page: https://freeswitch.org/confluence/pages/viewpage.action?pageId=15139388 <https://freeswitch.org/confluence/pages/viewpage.action?pageId=15139388> and edited it but that’s not the one I originally saw, the other one had custom and other events for LUA listed. Thanks Mario G