[Feature Request] Zoho Books and Inventory | Item Amount Based on Custom Numeric Fields

[Feature Request] Zoho Books and Inventory | Item Amount Based on Custom Numeric Fields

Currently, the item amount = # of units * rate per unit.

Suppose, we have four fields F1 (% data type), F2 (% data type), F3 (Numeric data type) and F4 (Numeric data type).

Would like to update item amount = # of units * rate per unit * (F1 + F2) + (F3 + F4).

Please suggest how we can do it in Zoho Books or Zoho Inventory.