Partial receipt to and invoice (R03B50), could Pay Status be updated?

Oracle Enterprise One 9.2

HI, we are using R03B50 to apply receipts to invoices.

When an Invoice is "fully paid" the Pay Status code (PST) is updated to "P" in F03B11.

However, when the invoice is partial paid, the status does change. We would like to update to something that indicates that is "partially paid". Is there a way to do this?

Any help would be appreciate it.