discount not working in eCart

Hello, ... I have a working eCommerce site using your last eCart extension. I was implementing the coupon code tutorial I found on your site and I don´t know why but eCart doesn´t apply the defined discount. It applies other discounts without problems but not the one defined if a session variable is present...
Can you help me to figure what´s going on please ?

My site is www.greenpeel.cl

the normal cart is cart.php and the modified cart is cart2.php im this one you will see the coupon code field that should trigger the corresponding discount...
I did everything as explained in the tutorial and the session variable is set correctly.... Just the discount does not trigger...

Thank You,
Jorge Spoerer

I'd need FTP access to look at the code to determine where the issue is occurring.

Ok Ray... In private I´m sending you the requested FTP access....

You will see 2 carts files....

carro.php is the normal cart actually in production use
carro2.php is the cart with the modifications for the coupon code project...

Thank You

It is a case sensitivity issue... you are saving the session variable "PromoCode" but your discount rule is checking the variable "Promocode".

You just have to update one or the other to match and it should start working.

Did it and is working fine now.... Thanks for your help...

Problem solved...