How to update specific VM cart session data "paymentCurrency" programmatically

[Genius WebDesign]

Hi,

I need to change the VM cart session data using PHP.
Specifically I need to change the  paymentCurrency data i the VM cart session.

Any guidelines how to do this?

[Genius WebDesign]

I´m looking for a solution where I use JFactory to update the VM cart data in session, like this example:

Code Select Expand

$session =& JFactory::getSession();
$session->set( 'myvar', 'helloworld' );

So I basically need to use the above method to update "paymentCurrency" within the session.
Please advice.

I´m using VM 2.6

[chong]

$cartSession = VirtueMartCart::getCart();
$cartSession->paymentCurrency = 0;