How do you change sound class volume in 4.15?

I’m baffle by the lack of document on this. Somehow I cannot find anything on how to change sound class volume in current 4.15.
I used to be able to access all the local BaseSoundMix on FAudioDevie, but now it’s all private variables. So I have no idea of what to do.

Can anyone help point me to the current way of doing this in c++ now?

Best, ><

Never mind got it, i guess you can just access it directly from file path…

There was a lot of discussion on this. You need to create sound mix and override those data live & in config file.

Sadly, there are no samples for this.
Even UT4( except if there changed it) have no set it up with the appropriate way. They are using the old way to do it.