# role1/vars/main.yaml
---

xxx:
  owner: jtyr


# role1/tasks/main.yaml
---

- name: dummy
  vars:
    aaa: &aaa "{{ xxx }}"
  debug:
    var: aaa

- name: xxx
  copy:
    <<: *aaa
    dest: /tmp/test.params
    content: aaa
    mode: "0640"