Run a command with different args everytime in Ansible playbook

I am trying to run a command in Ansible so as to find the neighbors in my network:

- name: Get neighbors
  junos_rpc:
    rpc: "get-lldp-interface-neighbors"
    output: 'xml'
    args:
      interface_device: A
  register: net_topology
I have tried to loop over the args like this: