title: Magento Admin Custom Tab in Catalog Product
body: <p>I have created a custom tab under catalog product, the tab is coming fine but when i click on the tab the template for the block is not loading. It echo what i type but it is not fetching the template. I write this function in a class HTC_Csvpricing_Block_Adminhtml_Catalog_Product_Tab extends Mage_Adminhtml_Block_Template implements Mage_Adminhtml_Block_Widget_Tab_Interface</p>
  
  <pre><code>public function _construct()
  {
      parent::_construct();
      echo "I m here";
      $this-&gt;setTemplate('csvpricing/tab.phtml');
  }
  </code></pre>
  
  <p>Here what I write in app/design/adminhtml/default/default/layout/csvpricing.xml</p>
  
  <pre><code>&lt;csvpricing_adminhtml_csvpricing_index&gt;
      &lt;reference name="content"&gt;
          &lt;block type="csvpricing/adminhtml_csvpricing" name="csvpricing" /&gt;
      &lt;/reference&gt;
  &lt;/csvpricing_adminhtml_csvpricing_index&gt;
  
  &lt;adminhtml_catalog_product_edit&gt;
      &lt;reference name="product_tabs"&gt;
          &lt;action method="addTab"&gt;
              &lt;name&gt;csvpricing_tab&lt;/name&gt;
              &lt;block&gt;csvpricing/adminhtml_catalog_product_tab&lt;/block&gt;
          &lt;/action&gt;
      &lt;/reference&gt;
  &lt;/adminhtml_catalog_product_edit&gt; 
  </code></pre>
  
  <p>Please guide what I am missing.</p>
  
  <p>Thanks</p>