Tasmota MQTT to configure OpenTerm Termostat

Hello, I’m trying to configure an boiler thermostat using an Tasmota connected to OpenTerm boiler.
Boiler has hot water and heating. I have the hardware connected and I have data on Home Assistant but I can’t figure out the MQTT HVAC integration.
For now I’m stuck at the hot water configuration, and I do not know what I’m missing here:
MQTT HVAC integration config:

  - platform: mqtt
    name: Hot Wather
      - "heat"
    current_temperature_template: "{{ value_json.DS18B20-1.Temperature }}"
    current_temperature_topic: "tele/TERMOSTAT.V1_D23202/SENSOR"
    temperature_command_topic: "cmnd/TERMOSTAT.V1_D23202/OT_TWATER"
    initial: 45
    precision: 1.0
    retain: true
#    icon: mdi:water-pump
    qos: 0
    availability_topic: "tele/TERMOSTAT.V1_D23202/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
    max_temp: 55
    min_temp: 35
    payload_on: Online

I get the thermostat but no current current_temperature_topic with I want to get from an DS sensor attached to the same Tasmota device.

The MQTT string from Tasmota looks like this: