Andre, you are a star, sir. That 'locale' value is indeed the secret I was looking for. The experience / flow_config aspects look interesting too. I shall work through your example to see if there are any other gems I can make use of. Is there any documentation on the 'environment' object that shows that 'locale' usage, or indeed any other useful parameters? And while I'm speaking to you, does the sandbox support negative testing using Client Side Express Checkout? All the best, Graham
... View more