Alter Sound Volume Dynamically

I have a very simple network in my player blueprint that triggers a sound when the right trigger is pulled. The sound is playing properly, but I want the volume of this sound to be modified dynamically while it plays based on the amount the trigger is pressed. I’ve looked everywhere and I can’t seem to find an answer. I know the solution must be something obvious, but I’m missing it. Any ideas? Thanks!

any chance that your trigger is not map to a input axis event? if your trigger only have press/release output, it means you map it in input action event. If you map it into axis event, then it will have a float output.