Ansible playbook example -- can env be shared?

site.yml

- hosts: localhost
  name: Create a new EC2 instance
  connection: local
  gather_facts: False

  vars_prompt:
    - name: "env"
      prompt: "Is this for production or dev"
      default: "dev"
  tasks:
    - name: Display the type of box to create
      debug: msg="I'll create a new {{ env }} box"

    - name: Create new host group (with placeholder IP)
      add_host: hostname=10.0.0.2 groups=ec2host

- hosts: ec2host
  name: Configure a new EC2 instance
  gather_facts: False
  tasks:
    - name: Display the type of box to configure
      debug: msg="I'll configure a new {{ env }} box"