无法在Ansible中打印具有正则表达式匹配结果的变量

---
- name: Print variable with regex match result
  hosts: localhost
  gather_facts: false

  vars:
    my_variable: "Hello World 123"

  tasks:
    - name: Print variable
      debug:
        msg: "{{ my_variable }}"

    - name: Match variable with regex
      set_fact:
        matched_variable: "{{ my_variable | regex_search('([0-9]+)') }}"

    - name: Print matched variable
      debug:
        msg: "{{ matched_variable }}"

TASK [Print variable] ************************************************************************************************
ok: [localhost] => {
    "msg": "Hello World 123"
}

TASK [Match variable with regex] **************************************************************************************
ok: [localhost]

TASK [Print matched variable] ****************************************************************************************
ok: [localhost] => {
    "msg": "123"
}