Hide navbar on scroll not working

I’m able to get my fixed navbar to appear on scroll down, but can’t get it to hide when I scroll back up to the hero section. I’ve set the trigger as the background video but it refuses to trigger. Any idea why?

Here is my public share link: https://preview.webflow.com/preview/solusion?utm_source=solusion&preview=d287022928e8d86d3dfb76e9b0b45d14

I was able to get this to work by adding the full interaction to the hero section. When the hero section is scrolled out of view, the fixed navbar is revealed. When scrolled back into view, the fixed navbar is hidden.