Thanks sir. Then can I add warning?

Code
 if (!$3) {
    .notice %nick Please change your nick within 2 minutes, or you will be kicked.
    .timer 1  30 badnick_alias $unsafe($1-2  30)
    .timer 1  90 badnick_alias $unsafe($1-2  90)
    .timer 1 120 badnick_alias $unsafe($1-2 120)
    return
  }
  elseif ($3 == 30) /notice %nick This is your second warning change your nick or be kicked 1 minute remaining!!
  elseif ($3 == 90) /notice %nick This is your LAST warning change your nick or be kicked 30 seconds remaining!!
  elseif ($3 == 120) kick %chan %nick Please change your nick
}