[Sonos-binding] Currenttitle stays undefined


newby here i added the Sonos Play1 as thing with the sonos binding. The basic things works. I can start and stop the sonos but it is not showing me the currenttile of the song playing.

I found a related topic: OH2.2 Sonos binding text items (currenttitle , currenttrack ...) BasicUI not refreshing text items

but restarting is not fixing for me the problem

Hopefully you guys can help me out

Player Sonos_Controller “Controller” (Sonos) {channel=“sonos:PLAY1:1:control”}
Dimmer Sonos_Volume “Volume [%.1f %%]” (Sonos) {channel=“sonos:PLAY1:1:volume”}
Switch Sonos_Mute “Mute” <soundvolume_mute> (Sonos) {channel=“sonos:PLAY1:1:mute”}
Switch Sonos_LED “LED” (Sonos) {channel=“sonos:PLAY1:1:led”}
String Sonos_CurrentTrack “Now playing [%s]” (Sonos) {channel=“sonos:PLAY1:1:currenttitle”}
String Sonos_State “Status [%s]” (Sonos) {channel=“sonos:PLAY1:1:state”}

Frame label=“Sonos” {

        Default item=Sonos_Controller

        Slider  item=Sonos_Volume

        Switch  item=Sonos_Mute

        Switch  item=Sonos_LED

        Text    item=Sonos_CurrentTrack     

        Text    item=Sonos_State