Javascript suddenly stopped working on Publish and Review 360

My JS worked fine while reviewing in 360, then suddenly stopped. Happened with my original publish file and further ones. I know the JS is being executed. I tested on my Desktop story file, and it does not work there either. Is this a SL glitch?  Thanks for anyone who can help. Code below: 

var player = GetPlayer();
var currentTime = new Date();
var hours = currentTime.getHours();
 
if (hours < 12)
 {
 player.SetVar("greeting","Good morning. Here are your learning objectives:")
 };
 if (hours >= 12 && hours <= 16)
 {
 player.SetVar("greeting","Good afternoon. Here are your learning objectives:")
 };
 if (hours > 17)
 {
 player.SetVar("greeting","Good evening. Here are your learning objectives:")
 };