How to use scripts with variables?

Hi,

I have written this script, but I don’t know where to use it?

hvac_everyone_left_single:
  alias: HVAC Mode after leaving the house (single)
  description: "Set the correct hvac mode after everyone has left home."
  fields:
    sensor_entity:
      description: "Humidity state sensor"
    climate_entity:
      description: "HVAC entity"
	sequence:
	  - choose:
	      - conditions:
	          - condition: state
	            entity_id: "{{ sensor_entity }}"
	            state: high
	        sequence:
	          - service: climate.set_hvac_mode
	            target:
	              entity_id: "{{ climate_entity }}"
	            data:
	              hvac_mode: dry
	          - wait_for_trigger:
	              - platform: state
	                entity_id: "{{ sensor_entity }}"
	                from: medium
	                to: low
	          - service: climate.set_hvac_mode
	            target:
	              entity_id: "{{ climate_entity }}"
	            data:
	              hvac_mode: 'off'
	      - conditions:
	          - condition: or
	            conditions:
	              - condition: state
	                entity_id: "{{ sensor_entity }}"
	                state: medium
	              - condition: state
	                entity_id: "{{ sensor_entity }}"
	                state: low
	        sequence:
	          - service: climate.set_hvac_mode
	            target:
	              entity_id: "{{ climate_entity }}"
	            data:
	              hvac_mode: 'off'
	    default: []
	mode: parallel

hvac_everyone_left_all:
  alias: HVAC Mode after leaving the house (single)
  description: "Set the correct hvac mode after everyone has left home."
  sequence:
    - service: script.turn_on
      target:
        entity_id: script.hvac_everyone_left_single
      data:
        variables:
          sensor_entity: sensor.bedroom_humidity_state
          climate_entity: climate.master_bedroom
    - service: script.turn_on
      target:
        entity_id: script.hvac_everyone_left_single
      data:
        variables:
          sensor_entity: sensor.guest_room_humidity_state
          climate_entity: climate.guest_room          

Is that even possible to do?