title: Get value for given index in QML LISTMODEL
body: <p>I have a QML ListModel like follows:</p>
  
  <pre><code>ListModel {
  id: myListModel
  ListElement {myId: "1", myValue = "12"}
  ListElement {myId: "2", myValue = "0"}
  ...
  ListElement {myId: "21", myValue = "123"}
  }
  </code></pre>
  
  <p>Then I have some simple QML labels like follows:</p>
  
  <pre><code>Label {
  id: myLabel1
  property int labelInt: 1
  text: myListModel.get().myValue; //Here is my problem!
  }
  
  Label {
  id: myLabel2
  property int labelInt: 22
  text: myListModel.get().myValue; //Here is my problem!
  }
  </code></pre>
  
  <p>My problem is to fill that brackets in myListMode.get().myValue.
  In fact I need a condition:
  <strong>if myListModel has some myId that equals my current labelInt,
  then return me the corresponding myId, otherwise leave empty space:</strong></p>
  
  <p>I tried with:</p>
  
  <pre><code>myListModel.get(myListModel.get(myId = labelInt).myId).myValue;
  </code></pre>
  
  <p>but I am not sure It's the proper way.</p>
  
  <p>Can you help me?
  Thank you</p>