title: How to get value from FlexForm to Controller
body: <p>I'm practicing on a very easy Extbase Extension and used a FlexForm to get three formula fields.<br />
  One of them is called &quot;code&quot; which should go to the EmbedderController.php and then to the viewer List.html.</p>
  <p>I checked all tutorials I could find.</p>
  <p>I don't understand how to get the FlexForm-value &quot;code&quot; into my Controller.<br />
  I get an empty page or don't get any value.</p>
  <p>This is my FlexForm: Embedder.xml</p>
  <pre><code>&lt;T3DataStructure&gt;
          &lt;meta type=&quot;array&quot;&gt;
                  &lt;langChildren&gt;0&lt;/langChildren&gt;
                  &lt;langDisable&gt;1&lt;/langDisable&gt;
          &lt;/meta&gt;
          &lt;ROOT&gt;
                  &lt;type&gt;array&lt;/type&gt;
                  &lt;el&gt;
                          &lt;settings.code&gt;
                                  &lt;TCEforms&gt;
                                          &lt;label&gt;Video Code&lt;/label&gt;
                                          &lt;config&gt;
                                                  &lt;type&gt;input&lt;/type&gt;
                                                  &lt;size&gt;20&lt;/size&gt;
                                                  &lt;max&gt;30&lt;/max&gt;
                                                  &lt;eval&gt;trim&lt;/eval&gt;
                                          &lt;/config&gt;
                                  &lt;/TCEforms&gt;
                          &lt;/settings.code&gt;
                          &lt;settings.width&gt;
                                  &lt;TCEforms&gt;
                                          &lt;exclude&gt;1&lt;/exclude&gt;
                                          &lt;label&gt;Breite in Pixel&lt;/label&gt;
                                          &lt;config&gt;
                                                  &lt;type&gt;input&lt;/type&gt;
                                                  &lt;size&gt;10&lt;/size&gt;
                                                  &lt;max&gt;10&lt;/max&gt;
                                                  &lt;eval&gt;trim&lt;/eval&gt;
                                          &lt;/config&gt;
                                  &lt;/TCEforms&gt;
                          &lt;/settings.width&gt;
                          &lt;settings.height&gt;
                                  &lt;TCEforms&gt;
                                          &lt;exclude&gt;1&lt;/exclude&gt;
                                          &lt;label&gt;Höhe in Pixel&lt;/label&gt;
                                          &lt;config&gt;
                                                  &lt;type&gt;input&lt;/type&gt;
                                                  &lt;size&gt;10&lt;/size&gt;
                                                  &lt;max&gt;10&lt;/max&gt;
                                                  &lt;eval&gt;trim&lt;/eval&gt;
                                          &lt;/config&gt;
                                  &lt;/TCEforms&gt;
                          &lt;/settings.height&gt;
                  &lt;/el&gt;
          &lt;/ROOT&gt;
  &lt;/T3DataStructure&gt;
  </code></pre>
  <p>And this is my EmbedderController.php</p>
  <pre><code>&lt;?php
  namespace HhuMediathek\Hhumediathek\Controller;
       
  /**
   * EmbedderController
   */
  class EmbedderController extends \TYPO3\CMS\Extbase\Mvc\Controller\ActionController {
       
          /**
           * embedderRepository
           *
           * @var \HhuMediathek\Hhumediathek\Domain\Repository\EmbedderRepository
           * @inject
           */
          protected $embedderRepository = NULL;
       
          /**
           * action list
           *
           * @return void
           */
          public function listAction() {
                  $this-&gt;settings['code'];
          }
  }
  </code></pre>
  <p>And this is the viewer List.html</p>
  <pre><code>&lt;f:layout name=&quot;Default&quot; /&gt;
  &lt;f:section name=&quot;main&quot;&gt;
  &lt;iframe width='570' height='321' style='width: 570px; height: 321px; border: 1px solid #ccc;' src='//xxx.de/embed/{code}' frameborder='0' allowfullscreen&gt;&lt;/iframe&gt;
      &lt;/f:section&gt;
  </code></pre>