Push Sound Mix Modifier not working

I’m trying to make a water muffled effect via Push Sound Mix Modifier (so all sounds, music, bullets, steps, etc are muffled) but it just don’t work (the sound doesn’t change)

I followed this tutorial

And this is my bp (when I enter the box it prints the text)


And here is my level (with the box and sound)

I’m having this exact same issue. Have you discovered any solutions?

Did not find any solution so far

Found this topic after following the same muffled audio tutorial, I don’t suppose anyone found any way to fix this issue?

I’m still facing the same issue today. Any luck from anyone?

same issue today

Same problem and still not fixed 6 years after the first time i saw this on a post asking for help.