openHAB Athom bulb Tasmota 9.5.0 UI slider

Hi,

i installed a Athom RGBCWW bulb and made them known to openHAB. Everything works fine except controlling the white color temeprature via a slider on the welcome page.
The channel is

  - id: TLampe15W1CT
    channelTypeUID: mqtt:dimmer
    label: Cold Warm 15W1
    description: null
    configuration:
      commandTopic: cmnd/lampe15W1/CT
      step: 5
      min: 153
      stateTopic: stat/lampe15W1/STATE
      transformationPattern: JSONPATH:$CT
      max: 500

the widget on the page is

              - component: oh-grid-col
                config:
                  width: "20"
                slots:
                  default:
                    - component: oh-slider-card
                      config:
                        scale: true
                        label: true
                        scaleSubSteps: 5
                        min: 153
                        max: 500
                        step: 1
                        item: ThingLampe15W1_ColdWarm15W1
                        title: Kalt/Warm

The item is connected to the channel and works on the channel setup page.
What is wrong configured? Any other slider for dimming the bulb is working.

Thanks
Dietmar

  • Platform information:
    • Hardware: Raspberry 4
    • OS: rapsberian
    • Java Runtime Environment: which java platform is used and what version
    • openHAB version: 3.1.0