I have seen the software guys stuff, the thing is the mod is so close to working. If I use drop down boxes it gets the value fine and works really well. It just if I use a text box the value does not seem to be in shopping_cart.php. Regarding the NaN error, the user cannot continue to the checkout until a correct numerical value is entered, so this would not be an issue. The reason I need the value in shopping_cart.php is because to display the correct price based on X x Y I have to make a calculation other wise the value in the unit column is incorrect but as I say this all works fine when using dropdown boxes, I must be able to get the value of the text box from somewhere.
Maxell