Forums Scripts & Popups (Twitch) Users add themselves to a command

So it's the script would look like:

ON *:TEXT:!listban:#: {
if (%listban) { return }
SET %sub_list $remtok(%sub_list,$nick $+ $chr(44),0,32)
MSG $chan $nick $+ , you have been removed from the !list.
}
}

Like this?? and if so what about a !listunban ??