How to adjust the volume of a sound cue using a trigger box?

[BaxAxter5]

In UE5.2 I have a sound cue playing music tracks on random, from event play in my game mode.
I want to turn this music down at certain times in the game, triggered by a trigger box.
There are nodes in Unreal like ‘adjust volume’ which seem like they would be the easiest most obvious thing in the world, but I just can’t get it to work and many people seem to have the same issue.
I am trying to set the volume from the trigger box blueprint, using a reference to the audio component. But nothing happens, the music keeps playing and is not turned down. Print strings and breakpoints show the execution line is firing.
Thanks.

[ClockworkOcean]

You need to spawn the sound, rather than just playing it. Then you have a reference to control

[BaxAxter5]

But the sound is already playing from event begin play. This just spawns a second instance of it so there are now two sound cues playing.

[ClockworkOcean]

When you spawn it on begin play, you need to keep a reference. Later, you can control the sound using that reference.

[BaxAxter5]

Like this? If so, no, still does nothing. Music just keeps playing.

[ClockworkOcean]

I’ve just tried it, it works.

You have it set there to take 5 seconds to get to zero. Is that right?

[BaxAxter5]

Yes, but it doesn’t turn down or stop. Just won’t work for me, I’ve tried so many combinations and nodes. Keeps playing.

[ClockworkOcean]

So you start it playing in the game mode. How do you get the reference from the game move to the actor with the collision volume?

[BaxAxter5]

Thank you. Your question made me realise I was not referencing the game mode correctly.
I thought I could just copy and paste the game music Ref variable, but I did this instead and it works.
Greatly appreciated.