Rules not evaluated Sonos binding


I have a problem getting a .rules to be applied for the sonos binding.
I’m running Openhab 2b3


Group SonosKitchen "Sonos PLAY:5 Kitchen" (Sonos)
Player SonosKitchenControl    "Control [%s]"     <settings> (SonosKitchen) { channel="sonos:PLAY5:RINCON_000E5857B06XXXXXX:control"}
Dimmer SonosKitchenVolume     "Volume [%.1f %%]" <video>    (SonosKitchen) { channel="sonos:PLAY5:RINCON_000E5857B06XXXXXX:volume" }
String SonosKitchenArtist     "Artist [%s]"                 (SonosKitchen) { channel="sonos:PLAY5:RINCON_000E5857B06XXXXXX:currentartist" }
String SonosKitchenTitle      "Title  [%s]"                 (SonosKitchen) { channel="sonos:PLAY5:RINCON_000E5857B06XXXXXX:currenttitle" }
String SonosKitchenTrack      "Track [%s] "                 (SonosKitchen) { channel="sonos:PLAY5:RINCON_000E5857B06XXXXXX:currenttrack" }
String SonosKitchenInfo       "Info [%s]"                   (SonosKitchen)


rule "update SonosKitchenInfo"
    Item SonosKitchenTitle updated
   SonosKitchenInfo.postUpdate(SonosKitchenArtist.state.toString + "-" + SonosKitchenTitle.state.toString)
 Frame label="Sonos Kitchen" {
	Default item=SonosKitchenControl label="Sonos" icon="settings"
	Slider item=SonosKitchenVolume label="Volume [%.1f %%]"
	Text   item=SonosKitchenInfo

However the rules are not triggered from what I can see.
In the logs I can see:

2016-08-21 17:03:43.373 [INFO ] [marthome.event.ItemStateChangedEvent] - SonosKitchenTitle changed from X to Y

And I can see:

2016-08-21 17:06:08.870 [INFO ] [el.core.internal.ModelRepositoryImpl] - Refreshing model ‘sonos.rules’

I also tried to change the rule to use the object directly like:

Item sonos_PLAY5_RINCON_000E5857B06XXXXXX_currenttitle

But that does not seem to work either.

Does anyone have any idea how I can debug this further, why are not the .rules applied?
It has to be said but I’m fairly new to Openhab, so I might have missed something crucial in the setup or similar

Take a look at the wiki for rules triggers:

The correct trigger for “updated” is
received update

Thanks, that works!
Regards S