Is it possible in a form to have live currency exchange data come in via an API perhaps, maybe call them on a layout ready script from an online provider and then use the exchange rate data to affect a forms behavior? I have signed up to a free account with an online API called Currencylayer which seems to offer what i'm looking for in terms of the raw data.
I have a requisition form I am working on and have been asked to make it multi-currency in terms of it's look and feel as well as its behavior with regard to the total value. It's default is AUD, and if it exceeds a certain amount, the form will insist on a director signing it as authority. I have this working, but our imposed limits are in AUD and if someone picks EUR for example, I would like the form to (in the background) convert this amount using live exchange rates to aud, and then act accordingly based on this AUD value.