how to show a widget for a post of a specific label only?

<b:widget id='HTML3' locked='false' title='Learn Java' type='HTML' version='1' visible='true'>

                    <b:includable id='main'>

  <b:loop values='data:post.labels' var='label'>

      <b:if cond='data:label.name == &quot;blogging&quot;'>

  <!-- only display title if it's non-empty -->

  <b:if cond='data:title != &quot;&quot;'>

    <h2 class='title'><data:title/></h2>

  </b:if>

  <div class='widget-content'>

    <data:content/>

  </div>

  <b:include name='quickedit'/>

    </b:if>

    </b:loop>

</b:includable>

                  </b:widget>