Loans Management - Withholding Tax on Interest - Product type 33A

Dear Experts,

I´m trying to config the withholding tax on interest per product type 33A General Loan Given.  Do you know which is the correct flow type to use and how to config and link it  in order to set the base amount related to the interest calculated amount?

In my design is always a quarterly calculation for Intercompany loans and, in special case, I need to apply the WHT to the calculated amount of the interest.

Example:

Interest invoice : Flow Type 0110 A_Interest debit pos. rec.

01     Customer Affiliate         1000

50     P&L Interest                 1000

Interest invoice with 10% WHT

01     Customer Affiliate           900

40     WHT 10%                       10

50     P&L Interest                 1000

Thanks in advance for any helpful advice you could provide me.

Best regards

Paolo