title: How to update a zone inside a component when action is triggered from the container
body: <p>I have a page : Test.tml which contain a select and a component : </p>
  
  <pre><code>       &lt;t:zone t:id="zone1" t:clientId="zone1"&gt;
          &lt;form t:id="form" id="form" method="post"&gt;
              &lt;p&gt;
                  &lt;select t:type="select" t:id="simpleSelect" t:clientId="simpleSelect" t:value="simpleSelect" t:model="selectList" t:zone="zone1" /&gt;
              &lt;/p&gt;
          &lt;/form&gt;
    &lt;div t:type="SimpleTestComponent" t:id="simpleTestComponent" &gt;&lt;/div&gt;
  &lt;/t:zone&gt;
  </code></pre>
  
  <p>In Test.java, i catch the event : </p>
  
  <pre><code>@OnEvent(value = EventConstants.VALUE_CHANGED, component = "simpleSelect")
  public Object changeOnSelect(String value) {
      return zone1.getBody();
  }
  </code></pre>
  
  <p>which well update zone1</p>
  
  <p>And i have a component which also contain a select and a zone to update; the content of the component select depend of the container select form value, so i need to update also the content of component. If i don't have a zone inside my component it works well, but it's not the case. </p>
  
  <p>inside SimpleTestComponent.tml, i have : </p>
  
  <pre><code>   &lt;form t:id="form" id="form" method="post"&gt;
          &lt;p&gt;
              &lt;select t:type="select" t:id="nameSelect" t:clientId="nameSelect" t:value="nameSelected" t:model="nameList" t:zone="zoneComponent"/&gt;
          &lt;/p&gt;
      &lt;/form&gt;
       &lt;t:zone t:id="zoneComponent" t:clientId="zoneComponent"&gt;
      &lt;p&gt;${nameSelected}&lt;/p&gt;&lt;/t:zone&gt;
  </code></pre>
  
  <p>and in SimpleTestComponent.java => </p>
  
  <pre><code>@OnEvent(value = EventConstants.VALUE_CHANGED, component = "nameSelect")
  public Object valueChanged() {
      return zoneComponentId.getBody();
  }
  </code></pre>
  
  <p>I catch the select change, and i update the value.</p>
  
  <p>What i want now is to be able to also update the content of SimpleTestComponent when the select is changed from Test.tml. If i include simpleTestComponent inside zone1, i have an error, about the zone inside simpleTestComponent, and i return a MultiZoneUpdate when i trigger the valueChanged event in Test.java, with zone1 and the component zone (i put a public getter on zone component), i also have an error, so what's the solution ... ? </p>
  
  <p>I'm not sure to be perfectly clear, thx for reading. :)</p>