How force to move to Warm phase

Elastic Stack Elasticsearch
3

Thank you!
I've read the article previous to post the topic but It was not working for me.
I've tried

POST _ilm/move/my_index
{
    "current_step": { 
    "phase": "hot",
    "action": "complete",
    "name": "complete"
  },
  "next_step": { 
    "phase": "warm",
    "action": "allocate",
    "name": "allocate"
  }
}

and It worked

Regards!
Ana