Magento – How to change the order status cancel in magento after payment cancelled from MIGS Payment Gateway

I integrate my website with MIGS payment Gateway.

I have an issue on orders, if customer cancel the payment from payment gateway successfully return to website and show the order as cancelled but from the admin panel order status shows as processing.

How can i update order status as cancelled.

I tried this by magento event observer. But It is not working.
Following are my coding.

File Wired_Orderscancel.xml(Path:-/app/etc/modules)

<?xml version="1.0" encoding="utf-8"?>
<config>
<modules>
    <Wired_Orderscancel>
        <active>true</active>
        <codePool>local</codePool>
    </Wired_Orderscancel>
</modules>

File config.xml(Path:-\app\code\local\Wired\Orderscancel\etc)

<?xml version="1.0"?>
<config>
<modules>
    <Wired_Orderscancel>
        <version>0.1.0</version>
    </Wired_Orderscancel>
</modules>
<global>
    <models>
        <orders>
            <class>Wired_Orders_Model</class>
        </orders>
    </models>
    <helpers>
        <orders>
            <class>Wired_Orders_Helper</class>
        </orders>
    </helpers>
    <events>
        <sales_order_payment_cancel>
            <observers>
                <change_order_status>
                    <class>orders/observer</class>
                    <method>CodeOrdeStatus</method>
                </change_order_status>
            </observers>
        </sales_order_payment_cancel>
    </events>
 </global>
</config>

File Observer.php (Path:-\app\code\local\Wired\Orderscancel\Model)

class Wired_Orders_Model_Observer extends Varien_Event_Observer
{
public function CodeOrdeStatus($observer){

    $order = $observer->getEvent()->getOrder();
    $order=Mage::getModel('sales/order')->load($order->getId());


    //$order->setData('state', "complete");
    $order->setStatus("canceled");
    $order->save(); 

}
}

How can i fix this issue,
Thank you