Jethro your code is correct but you pasted color-code $2-

here's what I'll do :
//spam notice $me 2 10 5 test

alias spam {
  if !$1 || !$2 || !$3 || !$4 || !$5 || !$6 || !$regex($1,/(msg|notice)/i) || $3 !isnum || $4 !isnum || $5 !isnum { echo -at Syntax : /spam <msg|notice> <nick,nicks,...> <number of lines> <how often repeat on the same line>  <all the time x> <text> }
  else {
    $+($chr(46),$1) $2 You will be spammed all the $duration($5)
    var %n = 1, %n1 = $3
    while (%n <= %n1) {
      .timer 1 $5 $+($chr(46),$1) $2 $str($$6- $+ $chr(32) , $+ $4 $+ )
      inc %n
    }
  }
}

the code is not specifically optimized but it shows the possibilities in a few lines
can be used a $istok instead of regex ( !$istok(msg.notice,$1,46) )
what is practical is done you can send your message to several people <nick1,nick2,..>