Remove Sound Icon/Volume Control from any slide

Thanks Perry for that code but it didn't work for me. I'm using Storyline 3 and have only one slide with audio. We have a new requirement to include the volume button on the player so I just need that icon for the one slide only. I put your java to hide the volume in a trigger on the first slide of the project [$(".cs-icon.volume-icon").hide();] and then the java to add it back in on the slide with audio [$(".cs-icon.volume-icon").show();] and then again inhibit it on the slide following the one slide with audio.  

Maybe this doesn't work in Storyline 3?  (Sadly I'm unable to share the file)