add new field in the combination.tpl of produc

[massimopasquali]

Hi,

I'have tryed to modify the template combination.tpl of products, adding a new fields "multiple quantity" (checkbox), doing that I've modified this component :

table product_attribute
controllers/admin/AdminProductsController.php
classes/Product.php
classes/Combination.php
admin/themes/default/template/controllers/products/combinations.tpl
js/admin-products.js

but didn't doing, when I clicked on "save" the change status of the new field checkbox didn't save in the DB, idem for the quantity

I have two question:

May you tell me wich are the correct list of object that i must change to add correctly a new field in tha combination.tpl of product form?

When we adding a new field in defination array, we have to section "default" and "shop", wich is the different, and in which section we must adding a new field?

thanks