Ansible-playbook loop issue

I have a playbook that works great when I limit to a single host. ansible-playbook -k playbook.yml group1

I need to be able to run it against multiple hosts at the same time. The syntax would be: ansible-playbook -k playbook.yml 'group1 group2'

group 1 is a group that has several servers with different applications installed server1 (this is the proxy server) server2 server3 server4

group 2 is a group that has several servers with different applications installed server5 (this is the proxy server) server6 server7 server8

proxy is a group of all my proxy servers server1 server5

I am polling a directory for a list of files to unzip, and asking the user for which file they want to use. The task returns this: TASK pause:

Choose the NUMBER of the file to select:

1--------files/jtt_test/file1.tgz

2--------files/jtt_test/file2.gz

3--------files/jtt_test/file3.tgz

4--------files/jtt_test/file4.jar

5--------files/jtt_test/file5.jar

The user picks a number and that is the file to be unarchived.

I run against group1 by itself and it works fine. I run against group1 and group2 at once, and it errors out. I am assuming because it can not pass the variable of the file being chosen.

The playbook is this:

-name: Update UI files

hosts: proxy

tasks:

- find:
    path: "files/{{ instance_dir }}"
  register: result
  delegate_to: localhost
- set_fact:
    my_files: "{{ result.files|map(attribute='path')|list|sort }}"
- pause:
    prompt: |
      Choose the NUMBER of the file to select:
      {% for file in my_files %}
      {{ loop.index }}----------{{ file }}
      {% endfor %}
  register: result

- debug:
    msg: "selected file: {{ my_files[result.user_input|int - 1] }}"

fatal: [proxy.local.test]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'dict object' has no attribute 'user_input'\n\nThe error appears to be in 'playbook.yml': line 30, column 7, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n - debug:\n ^ here\n"}

I am not sure how to resolve this.