I have this addon that perfectly work (thanks to Your help :-P )
I'd like to add a feature:
Is a not allowed nick join or change nick with a not allowed one, he'll be ban/quiet. I tried to add:

Code
on *:join:#CHANNEL:if (($calc($regex($nick,/[A-Z]/g) * 100 / $len($nick)) > 40)) badnick_alias2 #CHANNEL $nick

on *:nick:if (($calc($regex($newnick,/[A-Z]/g) * 100 / $len($newnick)) > 40)) badnick_alias2 #CHANNEL $newnick

alias badnick_alias2 {
  var %chan $1 , %nick $2
  if (%nick !ison %chan) || (%nick isop %chan) || (%nick ishop %chan) || ($len(%nick) < 3) return
  if (!$3) {
[b][color:#FF0000].timer 1 2 /mode #CHANNEL +b ~q: $+ $address($1,2) $$1 NICK NOT ALLOWED![/color][/b]
    .timer 1 5 notice %nick WARN ON JOIN
    .timer 1 20 badnick_alias2 %chan %nick 20
    .timer 1 30 badnick_alias2 %chan %nick 30
    ;.timer 1 40 badnick_alias2 %chan %nick 40
    .timer 1 41 badnick_alias2 %chan %nick 41
    return
  }
  elseif ($3 == 20) notice %nick SECOND WARN
  elseif ($3 == 30) notice %nick Ultimo avviso, LAST WARN
  elseif ($3 == 41) kick %chan %nick KICK

}
}

If user doesn't change nick with allowed one, he'll be kicked out.
if user change nick with regular one, then he'll get unbanned from quiet.
But doesn't work.
Any help?
Thanks