question with aws ec2 exact_count

[Michael Baydoun]

Thought the task below would create 1 instance with the count_tag "demo", only if there wasn't one running, but it's creating a new instance every time.

Am I using exact_count incorrectly?

- name: spin up ec2 instance

  ec2:

    count_tag: demo

    exact_count: 1

    image: ami-60b6c60a

    region: us-east-1

    type: t2.nano

    wait: yes

Using ansible 2.0.0.2 and boto 2.39.0