title: populate extjs combobox from ajax response values
body: <p>I have an ajax with the following response and I don't seem to find the way to populate an extjs combobox with the values 1-5.</p>
  
  <p>My response is  : </p>
  
  <pre><code>{"items":[{"field":null,"message":null,"value["value1","value2","value3","value4","value5"],"error":false}]}
  </code></pre>
  
  <p>I read that I should use displayField and valueField but in this case I don't know how. I just have a simple array of strings.</p>