title: Polymer - reload core-list data
body: <p>I wanted reload a core-list element to show new data, but it´s not refreshing.
  I re-call the JS function thats generate the data but doesn t work... and reload like a 'normal' div doesn t work either! The list only shows the new data if i reload the entire page...</p>
  
  <pre><code>function values(sender, textomsg, datacriacao, senderfoto){
     var sender2 = sender.split(",");
     var textomsg2 = textomsg.split(",");
     var datacriacao2 = datacriacao.split(",");
     var senderfoto2 = senderfoto.split(",");
  
     var namegen = {
         generateString: function (inLength) {
             var s = '';
             for (var i = 0; i &lt; inLength; i++) {
                 s += String.fromCharCode(Math.floor(Math.random() * 26) + 97);
             }
             return s;
         },
         generateName: function (inMin, inMax) {
             return this.generateString(Math.floor(Math.random() * (inMax - inMin + 1) + inMin));
         }
  };
  
  Polymer('list-test', {
  
      count: sender.length,
      ready: function () {
          this.data = this.generateData();
  
      },
      generateData: function () {
          var names = [], data = [];
          for (var i = 0; i &lt; this.count; i++) {
              names.push(namegen.generateName(4, 8));
          }
          names.sort();
          for (var i = 0; i &lt; this.count; i++) {
              data.push({
                  index: i,
                  sender: sender2[i],
                  textomsg: textomsg2[i],
                  datacriacao: datacriacao2[i],
                  senderfoto: senderfoto2[i]
              });
          }
  
          return data;
  
      },
      tapAction: function (e) {
          console.log('tap', e);
      }
  });
  
  }
  </code></pre>
  
  <p>
  </p>
  
  <p>&lt;%----%></p>
  
  <pre><code>&lt;template id="templateConversas" runat="server"&gt;
  
    &lt;div id="item" class="item {{ {selected: selected} | tokenList }}"  &gt;&lt;%--onClick="conversa('{{name}}');"--%&gt;
      &lt;div class="message" style="background-image: url({{senderfoto}});"&gt;
        &lt;span class="from"&gt;&lt;br/&gt;{{sender}}&lt;/span&gt;
        &lt;span class="timestamp"&gt;{{datacriacao}}&lt;/span&gt;
        &lt;div class="subject"&gt;&lt;br/&gt;{{textomsg}} &lt;/div&gt;&lt;%--------Infinite List. {{index}}--%&gt;
        &lt;%--&lt;div class="body"&gt;&lt;br/&gt;Mensagem de teste...........&lt;/div&gt;--%&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  
       &lt;/template&gt;
  </code></pre>
  
  <p></p>
  
  <p>
  </p>
  
  <p>The problem is also reload the 'list-test'. if i call the js function after the list is loaded it doesn't apply the new data...</p>