you could do ur menu like this as well

menu * {
  .Auto Ident Power
  .. $iif(%GuestDisable,Off,On):{ $iif(!%GuestDisable,set %GuestDisable On,unset %GuestDisable) | echo -a $iif(%GuestDisable,Auto Ident Power On,Auto Ident Power Off) }
}

i also would add a set up on the menu to add ur nick and pass word as well that way you can set it up without opening the scripts editor.