on *:JOIN:#:{ 
if (%agon == true) } .notice $nick Hi there, welcome to $chan !! 
}

on *:text:autogreet off:*:{ if ($nick == tysonfawlay) {
 if ($2 == off) {
 %agon = false | /notice $nick The auto-greet is now switched OFF 
}
 }
on *:text:autogreet on:*:{ if ($nick == tysonfawlay) { if ($2 == on) {
 %agon = true | /notice $nick The auto-greet is now switched ON