depends on how you define well.
Example: If you teach your voice library the term ‘request picture’, then voice attack will obviosly recognize that term. However, in a multiplayer, you call out the AWACS callsign, your callsign and then the request. 'Chalis1 request picture could be an option, but as soon as you say ‘Chalice 1 your callsign request picture’ VA is lost.
Kansas, there is another option. I did edit my VAC profile for wingman and such to “two,…”, the tower ones to “Mother,…”(I fly the Hornet,mainly) but didn’t want to do it for the AWACS ones. I wanted to use whatever callsign the Sentry is using for that mission.
So, I have taken to giving the call sign,then my call sign, stay silent for a very brief pause, then give the VAC command. VAC will still work with the proper pause, and the “immersion effect” is there. Give it a try. Getting used to inserting the proper length pause becomes natural very quickly.