on $*:TEXT:/^[!@.]tb/Si:#:{ 
  if ($nick ishop $chan || $nick isop $chan) { 
    if ($2 isnum) { 
      ban -ku $+ $calc( $2 * 60 ) $chan $3 $4- (Banned for $2 minutes.)
    } 
    else { notice $nick You must supply in this format: !tb <minutes> <nick> <reason> } 
  } 
}