the only way i managed to achieve this was by sending a string to all clients and then from that string working out if it was intended for them and responding as needed else just ignoring it

there're new commands added in A7 (no use to you i know) but i think that they highlight some of the required events and commands in a6 don't exist
send_string (STRING*)
send_string_to (ENTITY*, STRING*)
send_string_id (var client_id, STRING*)

hope this helps somewhat...