Iterating a result array with Ansible

I'm trying to figure out how to iterate a result array with Ansible.

I'm launching a few AWS EC2 instances like this:

- name: ec2-static-instances
  ec2:
    <all atributes here...>
  with_itens:
    - instance1
    - instance2
  register: instances

Ok, then I get the result of the instances above in a array of hashs/dictionaries. I'm able to get each instance id like this:

{{ instances.results[0].instance_ids[0] }}
{{ instances.results[1].instance_ids[0] }}

But, I would like to make it more dynamic and not need to know in advance how many elements I have in the array. I tried something like that, but it doesn't work.

# Elastic IPs for instances created above
- name: eip_static_instances
  ec2_eip:
    region: us-east-1
    in_vpc: yes
    instance_id: "{{ item.instance_id[0] }}"
  with_items:
   - "{{ instances.results }}"

I get the following error:

fatal: [127.0.0.1]: FAILED! => {"failed": true, "msg": "ERROR! 'dict object' has no attribute 'instance_id'"}

I went through the official documentation, but none of the examples shown there seem to do what I want to. Does anyone have a clue?

Thank you.

UPDATE

It turns out my problem was a simples mistake with the variable name, as anyone can see above (item.instance_id instead of item.instance_ids, the later being the right one). As reference for readers, fix it and the code above will work. Thanks.