Need help with Harmony hub activity change launch script

So I’m new to home assistant, started a couple of days ago, with no prior coding knowledge. The main reason for me to start with hass, is the ability to send http commands to my soundbar for direct input switching. To clarify, the soundbar (HW-Q90R) doesn’t support this method of input switching, only cycling with one button, logitech messes up most of the time.

I got the the activities working, including status updater so i can change and view the harmony activities from the frontend. I also made some scripts with the commands I want to send to my soundbar.

But now I want to include this in the automation script, so when the activity updater changes to e.g. ps4 it will fire the appropriate script so the http command will change the input.

I tried alot of different approaches, but none seem to fire the script when selecting an activity. I also checked the logs for this. Any help would be greatly appreciated!

Configuration.yaml

#info
remote:
  - platform: harmony
    name: Harmony
    host: 192.168.2.3
    
#select activity
input_select:
  harmony:
    name: Harmony
    options:
      - Select Input
      - Kpn
      - PS4
      - Films en series
      - SmartHub
      - Nintendo Switch
      - Netflix
      - Amazon
      - PowerOff
    initial: Select Input

#HDMI switcher
rest_command:
  hdmi2:
    url: 'http://192.168.2.13:56001/UIC?cmd=%3Cname%3ESetFunc%3C/name%3E%3Cp%20type=%22str%22%20name=%22function%22%20val=%22hdmi2%22/%3E'
  hdmi1:
    url: 'http://192.168.2.13:56001/UIC?cmd=%3Cname%3ESetFunc%3C/name%3E%3Cp%20type=%22str%22%20name=%22function%22%20val=%22hdmi1%22/%3E'
  arc:
    url: 'http://192.168.2.13:56001/UIC?cmd=%3Cname%3ESetFunc%3C/name%3E%3Cp%20type=%22str%22%20name=%22function%22%20val=%22arc%22/%3E'    
    
#current activity

sensor:
  - platform: template
    sensors:
      harmony:
        value_template: '{{ state_attr("remote.harmony", "current_activity") }}'

Automations.yaml

#harmony activity automation

  - alias: Harmony activity switcher
    hide_entity: True
    trigger:
      platform: state
      entity_id: input_select.harmony
    action:
      service: remote.turn_on
      entity_id: remote.harmony
      data_template:
        activity: >
          {% if is_state("input_select.harmony", "Kpn") %}
            38064190
          {% elif is_state("input_select.harmony", "PS4") %}
            38064389
          {% elif is_state("input_select.harmony", "Films en series") %}
            38064453
          {% elif is_state("input_select.harmony", "SmartHub") %}
            41690741
          {% elif is_state("input_select.harmony", "Nintendo Switch") %}
            44273777
          {% elif is_state("input_select.harmony", "Netflix") %}
            45009580
          {% elif is_state("input_select.harmony", "Amazon") %}
            45009590    
          {% else %}
            -1
          {% endif %}

#activity update

  - alias: Harmony activity updater
    hide_entity: True
    trigger:
      platform: state
      entity_id: remote.harmony
    action:
      service: input_select.select_option
      data_template:
        entity_id: input_select.harmony
        option: "{{ states.remote.harmony.attributes.current_activity }}"

Scripts.yaml

#PS4 - HDMI 2
ps4:
    alias: hdmi2script
    description: 'Switch to correct HDMI'
    sequence:
        - alias: ps4
          service: rest_command.hdmi2

#Dune - HDMI 1         
dune:
    alias: hdmi1script
    description: 'Switch to correct HDMI'
    sequence:
        - alias: dune
          service: rest_command.hdmi1
#Kpn - ARC
kpn:
    alias: arcscript
    description: 'Switch to correct HDMI'
    sequence:
        - alias: kpn
          service: rest_command.arc
#Smarthub - ARC
smarthub:
    alias: arcscript
    description: 'Switch to correct HDMI'
    sequence:
        - alias: kpn
          service: rest_command.arc
#switch - ARC
switch:
    alias: arcscript
    description: 'Switch to correct HDMI'
    sequence:
        - alias: kpn
          service: rest_command.arc
#netflix - ARC
netflix:
    alias: arcscript
    description: 'Switch to correct HDMI'
    sequence:
        - alias: kpn
          service: rest_command.arc
#amazon - ARC
amazon:
    alias: arcscript
    description: 'Switch to correct HDMI'
    sequence:
        - alias: kpn
          service: rest_command.arc