No. addEvent return 'event id' of started event. Then you can stop this event by funtion:
stopEvent(event_id)
For what do you need value returned by event?!
If you want save value you must write it like in example below, store returned value in variable definied above script.
Short example from TFS:
PHP:
local savingEvent = 0
function onSay(cid, words, param, channel)
if(isNumber(param)) then
stopEvent(savingEvent)
save(tonumber(param) * 60 * 1000)
else
doSaveServer()
end
return true
end
function save(delay)
doSaveServer()
if(delay > 0) then
savingEvent = addEvent(save, delay, delay)
end
end
When player say /save with number it start event to save server every X minutes, when player say again /save X it stop old event and start new with new time interval.