Keep background audio volume while video plays

Hi,

I'm using background audio for one of my modules and I want it to keep playing at the same volume on a couple of slides. Problem is, those slides have videos (no audio), so Storyline decides to turn down the volume.

I told storyline to mute the videos, I used the background audio variable to keep the volume at 100 when video starts/ when timeline starts... nothing works.

It's really annoying to have the sound going up/down for the duration of the slide (which consists of images/text/videos)

Any ideas?