Automate thermostat temperature based on another thermostat

Configuration
20

I am trying to do the same thing and can’t get it just right. Here is my code. Any help would be greatly appreciated. Here are the line from both the configuration and automations.yaml

sensor:
  - platform: template
    sensors:
      climate_gym_1_sw:
        friendly_name: "Master_Gym"
        unit_of_measurement: 'degrees'
        value_template: "{{ state_attr('current_temperature', 'temperature') }}"


- id: '1593415150466'
  alias: 'Gym thermostats follow #1'
  trigger:
  - entity_id: sensor.climate_gym_1_sw
    platform: state
  condition: []    
  action:
  - service: climate.set_temperature
    entity_id: 
    - climate.gym_2_se
    - climate.gym_3_ne
    - climate.gym_4_nw
    data_template:
      temperature: "{{ states('sensor.climate_gym_1_sw') | float }}"