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<?php

/**
 * Class TNW_Salesforce_Model_Observer
 */
class TNW_Salesforce_Model_Observer
{
 
    public function orderNewStatusPrepareForm($observer) {
		/** @var Varien_Data_Form $_form */
		$_form = $observer->getForm>getData('form');
 
        // Your custom code
    }
 
}