Build New Tabs For Product In Prestashop

[ashian]

Hi all,

I am working on prestashop for 3 months. Now I am building new tabs for product, it is same with image but I have problem.

I can not save into the database.

The following steps that I did:
1. I build 3 table same with image
2. I create 3 class same with image only different name
3. I insert code into the Product.php

That is all.

Please help

Thank you.