title: trello api update checkitem state
body: <p>I would like to use the Trello API to update the state of checkItem.</p>
  
  <p>Here is my PUT:</p>
  
  <p>URL: cards/50d3791447d8a71f52000243/checklist/50d3841d65296725520002a0/checkItem/50d384e9c027149d3300074b/state</p>
  
  <p>fields: idCheckList=50d3841d65296725520002a0&amp;idCheckItem=50d384e9c027149d3300074b&amp;value=true</p>
  
  <p>Here is the API reference:</p>
  
  <p><a href="https://trello.com/docs/api/card/index.html#put-1-cards-card-id-or-shortlink-checklist-idchecklist-checkitem-idcheckitem-state" rel="nofollow">https://trello.com/docs/api/card/index.html#put-1-cards-card-id-or-shortlink-checklist-idchecklist-checkitem-idcheckitem-state</a></p>
  
  <p>Every other requests are work correct, but something wrong with this, and I don't know what :(</p>