Generating Payments from specific bank accounts

 Hi,

I am trying to set Oracle Payments so that specific bank accounts are used for certain payments i.e. the bank accounts that are held are in GBP, EUR and USD.  the EUR and USD are hedged accounts and only EUR payments should be made from the EUR account and USD payment should be made from USD account.  However, the GBP account must have no restrictions on the payment currencies that can be made which will include EUR and USD.

My question is how do I make a supplier payment for USD invoices only use the USD account and not the GBP account?  The only way I can see how to do this is create payment methods that are assigned to a specific bank account and then assign the payment method to the supplier.