help!...

Hi...how would you translate the following paragraph?..

Esta rutina retorna el saldo de la cuenta corriente de la póliza, para una fecha determinada. Si la póliza pertenece a la clase de producto Premium, la rutina calcula el saldo de la cuenta sumando el producto de las unidades disponibles por su precio respectivo.

Here's what I thought:

This routine returns the current account balance of the policy in a given date. If the policy belongs to the product class "Premium", the routine calculates the balance of the account by adding the product of the availables units multiplied by its own price.

Is it correct???

Thanks

This is posted in two places, here and in Sp to Eng.