Dg_Pricerulesextended Observer.php

observer.php

class Dg_Pricerulesextended_Model_Observer {

	public function newsletterSubscriberSave(Varien_Event_Observer $observer) {
	    $helper = Mage::helper('pricerulesextended');
	    $subscriber = $observer->getEvent()->getSubscriber();
	    $email = $subscriber->getEmail();

            $promo_value = Mage::getStoreConfig('pricerulesextended/promocode/dollarvalue');
            $promo_min = Mage::getStoreConfig('pricerulesextended/promocode/minpurchase');
        
            $helper->addPromoCode($email, $promo_value, $promo_min);

	    return $this;
	}
}