Editing GAS Attributes through items

Hey,

Im currently using the GAS Companion Plugin to manage my RPG project. But i couldnt find any good solution to edit Attributes through items.

Im my case i have BaseStats that shall be modified through item stats (e.g. i have 300Atk as a base stat and equip an item the gives me 6% bonus ATK)
I know that DataTables are read only so i thought about Data Assets to handle the items and handle CharacterStats trough an Actor Component.
But i have multiple Pawn i can posses and every one of them has different items and stats.
I guess i have to add that im not confident in C++ and want to handle that through BPs.

Any good idea how to approach this stuff? Or a recommended tutorial where i can learn that?

Thanks in advance!