Fix

on *:TEXT:*:#: {
 if ( $1 == !blacklist ) /blacklist $2 $3-
 if ( $1 == !whitelist ) /whitelist $2
}

on 100:JOIN:*: {
  mode $chan +b $address($nick,3)
  kick $chan $nick You have been blacklisted from this channel.
}
ALIAS whitelist ruser 100 $$1 3
ALIAS blacklist {
  if ( !$1 ) || ( !$2 ) echo -a 05Sorry - Syntax : 07/blacklist Nick Reason
  guser -a 100 $$1 3 $$2-
}