如何在ansible中注册基于另一个变量的变量？

- name: Register variable based on another variable
  hosts: localhost
  gather_facts: false
  vars:
    my_variable: "hello"
  tasks:
    - name: Set another variable based on my_variable
      set_fact:
        another_variable: "world {{ my_variable }}"
    - name: Print the registered variables
      debug:
        var:
          my_variable
          another_variable

TASK [Print the registered variables] **************************************************************************************************************************************************************************************
ok: [localhost] => {
    "my_variable": "hello",
    "another_variable": "world hello"
}