Creating invoices with both Functional and Entered Currency details

 Hi,

I am looking at creating a invoice using Bill Presentment Architecture and want to know if there is a way to have both the Functional and and entered currrency on the invoice.  This is needed for tax purposes as both currencied need splitting on the account.

E.g. enter an invoice in USD to a UK supplier in an Operating Unit and Ledger in GBP. I want the invoice to display both the entered currency of USD and functional currency of the Ledger GBP and corresponding VAT details.

At the moment I can only select the entered currency details.