/** * Add additional data to form element * * @param Varien_Data_Form_Element_Abstract $element * @return Mage_Adminhtml_Block_Sales_Order_Create_Form_Abstract */ protected function _addAdditionalFormElementData(Varien_Data_Form_Element_Abstract $element) { if ($element->getId() == 'region_id') { $element->setNoDisplay(true); } return $this; }