[Freeswitch-users] Is it possible to send an SIP UPDATE message via sendevent ?

Hi Guys, I have a quick question, I can see from documentation you can send SIP messages via sendevent and the ESL. Is it possible to send a SIP UPDATE message with this method and if so are there any configuration options I need to be aware of? Essentially we want to send an UPDATE after answer of a call to flag a change. Thanks Jon