<pre>on setSpeakerVolume volumeLevel  -- volumeLevel must be a number 0-7  -- volumeLevel 0 turns sound off  if volumeLevel is not a number then return "Volume not a number."  if volumeLevel < 0 then return "Volume must be a POSITIVE number."  if volumeLevel > 7 then return "Maximum volume must is 7."  volume(volumeLevel)  return the resultend setSpeakerVolume</pre>