title: Alfresco sdk 3 : populate fields after selection
body: <p>I would like to populate fields after selecting item :</p>
  
  <p>step1 (ok) :
  <a href="https://i.stack.imgur.com/mdtj9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mdtj9.png" alt="enter image description here"></a></p>
  
  <p>step 2: 
  <a href="https://i.stack.imgur.com/P8k2K.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/P8k2K.png" alt="enter image description here"></a></p>
  
  <p>and step 3 (what i try to do...) :</p>
  
  <p><a href="https://i.stack.imgur.com/TMZpp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TMZpp.png" alt="enter image description here"></a></p>
  
  <p>i can isolate info in Json Result but i don't know how to place it in the right field.
  example username must populate "identifiant" field :
  <a href="https://i.stack.imgur.com/VAYTo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VAYTo.png" alt="enter image description here"></a></p>