How to pass a NFC tag id as an argument to a script so a wait for trigger will use it


I’m trying to have script that may be triggered in different ways, and the script will have a wait_for_trigger command that will wait for some NFC tag to be scanned. It will be the calling automation or script that will tell the script which tag to check for.

I’m desperately trying to get the right syntax for that but with no success. What am I doing wrong?

Here’s an example of the calling script:

alias: Asktocheckatag
  - service: script.tagchecker
      nfctagvariable: 1%%%%%-%%%-%%%-%%%-%%%%%%%%0
mode: single

And here is the script that will take the variable and wait 10 seconds for that tag to be scanned:

alias: Tagchecker
  - wait_for_trigger:
      - platform: tag
        tag_id: "{{ nfctagvariable }}"
        id: tag_is_scanned
    timeout: "10"
  - choose:
      - conditions:
          - condition: template
            value_template: "{{ == 'tag_is_scanned' }}"
          - service: notify.mobile_app_phone
              message: The tag {{ nfctagvariable }} has been scanned on time.
      - service: notify.mobile_app_phone
          message: The tag {{ nfctagvariable }} has not been scanned on time.
mode: single

For some reason, the script never recognizes the tag. What am I doing wrong?

Probably because you didn’t define fields in the script definition.

Why do you need a script to call another script for this case?
Why don’t you use a script/service that will trigger an automation?