Adding more classes to pose trigger demo

Hi all,
absolutely new to Glitch and coding in general, so I’m trying to learn by hacking other projects. Right now I’m trying to modify this demo to include more classes than three, so it can recognize more poses and trigger a wider variety of audio clips. I’ve made a more complex pose model in Google Teachable Machine, and replaced the url in index.html. Works fine, the demo recognizes the first three classes from my model and plays sounds accordingly (as soon as I’ve renamed the original classes under sound-player.js). But when i try to add more sounds than the original three, nothing happens. Only three bars.

Probably a super simple question, but how would I go about adding more? My own model has around 50 classes.