Sync TRV with external sensor blueprint

sync_trv_with_external_temp_sensor.yaml

blueprint:
  name: Sync TRV temperature
  description: Sync external temperature sensor with TRV temperature
  domain: automation
  input:
    ieeeaddressoftrv:
      name: IEEE Address
      description: This is the address of the TRV found in your zigbee database example 0x459877fffe1f2e83
    external_temp:
      name: Select the external temp sensor
      description: This will be your external temp sensor
      selector:
        entity:
          domain: sensor
          device_class: temperature
    climate_name:
      name: Climate entry
      description: This will be the TRV it self in home assistant
      selector:
        entity:
          domain: climate 
alias: Calibrate Thermostat
description: ''

variables:
  target_device: !input 'ieeeaddressoftrv'
  climate_device: !input 'climate_name'
  external_temperature: !input 'external_temp'
  adjust: "{{state_attr(climate_device, 'current_temperature')}}"
trigger:
  - platform: state
    entity_id: !input 'external_temp'
    for:
      hours: 0
      minutes: 0
      seconds: 15
      milliseconds: 0
  - platform: state
    entity_id: !input 'climate_name'
    for:
      hours: 0
      minutes: 0
      seconds: 15
      milliseconds: 0
condition:
  condition: and
  conditions:
    - condition: template
      value_template: "{{ states(external_temperature) != 'unavailable' }}"
    - condition: template
      value_template: "{{ states(external_temperature) != 'unknown' }}"
    - condition: template
      value_template: "{{ state_attr(climate_device,'local_temperature_calibration')|float(0) | round(0) !=( states(external_temperature)|float(0) | round(1) - state_attr(climate_device,'local_temperature')|float(0) | round(0)) }}"
    - condition: or
      conditions:
        - condition: template
          value_template: "{{ state_attr(climate_device,'local_temperature_calibration')|float(0) | round(0) >-9 }}"
        - condition: template
          value_template: "{{ (states(external_temperature)|float(0) | round(0) - state_attr(climate_device,'local_temperature')|float(0) | round(0)) >-9 }}"
action:      
  - service: mqtt.publish
    data_template:
      topic: zigbee2mqtt/{{ target_device }}/set/local_temperature_calibration
      payload_template: >-
        {{(states(external_temperature)|float(0) | round(0) - state_attr(climate_device,'local_temperature')|float(0) | round(0))*((states(external_temperature)|float(0) | round(0) - state_attr(climate_device,'local_temperature')|float(0) | round(0))>=-9)+((states(external_temperature)|float(0) | round(0) - state_attr(climate_device,'local_temperature')|float(0) | round(0)) <-9)*-9}}
  - delay: 5
mode: single
max_exceeded: silent

If someone is able to do it yes but for now I will not be able to do it since I am not using it anymore

I have added the blueprint to HASS and run it and the log shows that its running fine. Do I have to setup an automation for it to to run this or will it run by itself? Sorry if this is perhaps to easy, but I am quite new and these moes thermostats are overshooting like crazy, so wanted to give this a try.

@mediaNen please use this: https://github.com/KartoffelToby/better_thermostat