average interest rate yield curve for bank overdraft account

Is it possible to:

u2022 Define a yield curve for (monthly) average interest rate based on an reference interest rate that is entered daily.

u2022 in a function module read the value for this average interest rate that is in table JBD11

u2022 in the interest indicator customizing transaction OBAA assign the above function module

u2022 In the bank GL account assign the above interest indicator