Changing weapon attributes (item damage, item attack speed, maximum durability)

I've looked through many forums, but I haven't found the answer I need. I have an idea to create a weapon that gets a quality parameter when crafting. Which in turn changes its damage or maximum durability, and so on. But, I have not found anywhere a normal way to directly edit these parameters. My salvation was the "Attributes" plugin, but unfortunately it does not work correctly with objects, it gives a compilation error. How can I change these parameters?