[Freeswitch-dev] "Event" header missing on NOTIFY message

Hi! I'm very new on this list, so I apologize if I'm sending this message to the wrong place. I have a application using a very old version of the sofia-sip library. That version has memory leaks, so I'm trying to use the "Freeswitch" version of that lib. After a few adjustments, it compiled and executed with my appplication, but I have a problem: The header "Event:" is missing on the NOTIFY messages. Do you know if there was modifications on the API interface? Do you have some tip about where to check to debug my application? Thanks in advance, Sérgio Schmiegelow