setVolume changes Volume on all speakers

[JiroMusik]

Hi,

I am using the node-raumserver on a Pi 3 for about a year now and I am very happy with it but there is one thing I got never working properly and this is the setVolume Control for adjusting the speakers without touching the others. I use value and id parameter but even with relative=false or absolute=true it always changes every speaker. Anyone with the same problem here?