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copied!<p>I worked it out. Here is the modified piece of code that works</p> <pre><code>public function appendCustomColumn(Varien_Event_Observer $observer) { $block = $observer->getEvent()->getBlock(); if (!isset($block)) { return $this; } if ($block->getType() == 'adminhtml/permissions_tab_roleinfo') { //get form instance $form = $block->getForm(); //create new custom fieldset 'website' $fieldset = $form->addFieldset( 'website_field', array( 'legend' => 'Website Extras', 'class' => 'fieldset-wide' ) ); //add new field $fieldset->addField('website', 'text', array( 'name' => 'website', 'label' => Mage::helper('adminhtml')->__('Website'), 'title' => Mage::helper('adminhtml')->__('Website'), 'disabled' => false, )); } } </code></pre> <p>XML Configuration:</p> <pre><code><events> <adminhtml_block_html_before> <observers> <Event_column_append> <type>model</type> <class>Mymodule_Mycompany_Model_Observer</class> <method>appendCustomColumn</method> </Event_column_append> </observers> </adminhtml_block_html_before> </events> </code></pre> <ol> <li>You need to use the event 'adminhtml_block_html_before' as the event which you were using did not even create the form object. That is why you were nt able to access the form object.</li> <li>The block that is creating this form elements was 'adminhtml/permissions_tab_roleinfo'. </li> <li>The method you were using was the not same one in the observer.</li> </ol> <p>Hope that helps :)...</p> <p>Cheers, Swapna</p>

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