How to take caller to voicemail right away?

Part of my dialplan for “after hours”

[code]
exten => s,1,Verbose(1, Caller ${CALLERID(all)} has entered the auto attendant)
same => n,Answer()
same => n,Set(TIMEOUT(digit)=2) ;this sets the inter-digit timer
same => n,Wait(1) ;wait 1 sec to establish audio
same => n(menustart),GotoIfTime(9:00-21:00,mon-fri,,?daygreeting:afterhoursgreeting) ;depending if it’s work time or not go to labels

    same => n(afterhoursgreeting),Background(/etc/asterisk/automated-attendant-prompts/ditat_afterhour_greeting)         ; after hours greeting
    same => n,VoiceMail(99@default,u)

    same => n(daygreeting),Background(/etc/asterisk/automated-attendant-prompts/ditat_main_greeting)                  ; day greeting
    same => n,WaitExten(4)                                          ; wait 4 sec max before give up
    same => n,Goto(0,1)   [/code]

Idea here - I want to read a message to the user and then just take straight to recording. Or let voice say “Leave your message”.

With my voicemail.conf setup:

[code][default]

; Voicemail boxes setup here!
99 => 4444, After Hours,iiii@iiiii.net[/code]

I get “The person at extension 99 is unavailable, leave message after the tone…”. I want just beep or maybe just message “Please leave a message after the tone” but without letting caller know it’s a 99. Where do I control this?