Set, Retrieve and Unset Session in Magento

Set:

$mySession = ‘Hello Bangladesh’;
Mage::getSingleton(‘core/session’)->setmySession($mySession);

To Retrieve:

$mySession = ”;
$mySession = Mage::getSingleton(‘core/session’)->getmySession();

To Unset:

Mage::getSingleton(‘core/session’)->unsmySession();