function keyboardHandler(eventType, character, keycode, modifiers)
 if eventType==eEvtKeyTextInput then
  Values["password"].String = Values["password"].String .. character
 elseif eventType == eEvtKeyDown and keycode == 8 then
  Values["password"].String = string.sub(Values["password"].String, 1, -2)
 end
 startAction("Scenes[yourScene].SceneActions[refresh]")
 return false
end
registerEventHandler("keyEvent", "keyboardHandler") Values["password"].String = Values["password"].String .. "1"