Template variable in script call

Configuration
,
1

I am using the following UI code

          - type: state-icon
            title: BlindSE
            icon: mdi:arrow-down
            entity: cover.salon_store_se
            tap_action:
              action: call-service
              service: script.turn_on
              service_data:
                entity_id: script.set_blind
                variables:
                  blind: "cover.salon_store_se"
                  pos: "{{ -25 }}"
                  tilt: "45"

basically passing on a cover entity name, position and tilt to this script which executes the positioning

set_blind:
  alias: 'Set Blind'
  mode: queued
  sequence:
    - service: cover.set_cover_position
      data:
        entity_id: "{{ blind }}"
        position: "{{ state_attr(blind, 'current_position')|int + pos |int }}"
    - service: cover.set_cover_tilt_position
      data:
        entity_id: "{{ blind }}"
        tilt_position: "{{ tilt }}"

now I am trying to move the position template above from the script into the UI call.
So my question can the variable “pos” in the UI be a template? And if so why does this call return an error:

pos: "{{ state_attr('cover.salon_store_se', 'current_position') | int + 25 }}"

Set Blind: Error executing script. Invalid data for call_service at pos 1: expected int for dictionary value @ data[‘position’]

2

You can’t use templates in lovelace without something like the template card.

Also why do you want to move it from the script to the UI?

3

Thanks for your answer.
There was no specific point. Just learning what is feasible and what not.

4

I already told you the same in your other topic regarding this script.