I create a sample ClickCounter Dart application and I tried to modify it to use a conditional template like this:

```html
<polymer-element name="click-counter">
  <template if="{{count < 10}}">
    <style>
      div {
        font-size: 24pt;
        text-align: center;
        margin-top: 140px;
      }
      button {
        font-size: 24pt;
        margin-bottom: 20px;
      }
    </style>
    <div>
      <button on-click="{{increment}}">Click me</button><br>
      <span>(click count: {{count}})</span>
    </div>
  </template>
  <template if="{{ count >= 10 }}">
  Too much
  </template>
  <script type="application/dart" src="clickcounter.dart"></script>
</polymer-element>

```

but even if the count attribut is higher or equals to 10, the first template is always displayed. I used the Dart Editor version 1.1.0.dev\_04\_00 (DEV), Dart SDK version 1.1.0-dev.4.0

Thks