set_stats_test_stg1.yml

---
- name: Test set_stats - Phase 1
  hosts: network
  become: false
  gather_facts: false

  tasks:
    - name: Set change_number
      ansible.builtin.set_fact:
        change_state: "{{ lookup('community.general.random_string', min_numeric=8) }}"

    - name: Debug change_number
      ansible.builtin.debug:
        var: change_state

    - name: Set stats per host
      ansible.builtin.set_stats:
        # per_host: true
        aggregate: true
        data:
          per_host_data: "{{ per_host_data | default({}) | combine({inventory_hostname: {'change_state': change_state}}) }}"

...