Edit total_customization_wt

[Rbn_R]

Hi guys

 

I need modify variable total_customization_wt. I need this:

 

total_customization_wt + X

 

X is a number (additional price). X can be different. X is dependent on the category of the product.

 

if the category ID is 1 => X = 400

if the category ID is 2 => X = 350

if the category ID is 3 => X =0

 

I tried edit shopping-cart-product-line.tpl (because i need it in shopping cart):

 

displayPrice price=$product.total_customization_wt+400

 

This code does not work because it does not save anywhere and it does not solve dependent X with ID.

 

Sorry for my language skills. I have Prestashop 1.4.7