Error creating internal sg

[ij3net-forthscale]

In
roles/daniel-rhoades.aws-security-groups/tasks/main.yml
After:

Commission inbound security groups

• name: "AWS | Provision networking | Create Inbound Security Groups"
  local_action:
  module: ec2_group
  name: "{{ item.sg_name }}"
  description: "{{ item.sg_description }}"
  region: "{{ vpc_region }}"
  vpc_id: "{{ vpc_id }}"
  state: "{{ ec2_inbound_group_state }}"
  rules: "{{ item.sg_rules }}"
  with_items: "{{ ec2_group_inbound_sg }}"
  register: ec2_group_inbound_sg

• debug: var=ec2_group_inbound_sg verbosity=4

I get:
fatal: [localhost]: FAILED! => {
"failed": true,
"msg": "[{u'sg_rules': [{u'to_port': 80, u'from_port': 80, u'group_id': u'{{ ec2_group_inbound_sg.results[0].group_id }}', u'proto': u'tcp'}], u'sg_name': u'inbound-web-internal', u'sg_description': u'allow http and https access (from load balancer only)'}]: 'list object' has no attribute 'results'"
}
suppose ansible can't register already existing variable. When I change variable name for register all works fine.