How to remove taxes on cart transform(update line item price)

Hi, when I do function for cart transform to create new line item price or expand line item price. When I want to exclude taxes it not exclude taxes on new line item price. Only on price of product

  price: {
    adjustment: {
      fixedPricePerUnit: {
        amount: (
          cost.amountPerQuantity.amount *
          (procent/100) *
          rate).toFixed(2),
      },
    },
  },

@Liam-Shopify can you help us?

Did you try to use subtotalAmount instead of amountPerQuantity?

Yes, and it is same…remove taxes on Shopify product not on added values on update line item price. We are using example from Shopify github: