Is SignageStudio support "KeyboardEvent" of script ?

[jj5552]

Hello all :
   I need to listen keyboard event to move to other Timelines. I use script like below but not work !

what's mistake in the code ?

import flash.utils.*;
import flash.events.KeyboardEvent;

stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressed);
stage.start();

function keyPressed(event:KeyboardEvent):void
{
    if (event.keyCode == Keyboard.ENTER)     
       return true;
    return false;
}