Создать вариативный продукт в WooComerce с помощью кода

Sergey quickly took the job, wrote a lot of codes, but the problem was not solved.
He said that it was impossible. Why was it married?
I believed that it was really impossible because he seemed to me a professional.

In order not to put him a bad feedback, he decided to ask him to do a slightly changed task, he agreed. After disappearing, he ceased to get in touch.
Then he said again that it was impossible.

I can say that the implementation of the original task is practically possible with results of 50%, as software mass creation of variations in woocommerce is not possible.
The customer accepted this information, and changed the task to another TZ. I agree that it has already become not encouraging to me, since a new task was placed before the fact, and at first it was not considered by me as the possibility was fulfilled by me.
I agree that the initially assigned task was performed by me for half of the function because some functions are not programmatically possible.
I confirm and agree to the refund of the funds to the customer.