I'm trying to use Messenger channel in a Flex instance, however, I haven't been able to make it work. The closest I've got is using at the Facebook channel configuration the function url INBOUND MESSAGE as callback url, this way I receive the messenger notification in Flex Agent console but there's no message in it.
If I use the webhook url provided by the Flow created in Studio I get a XML response error because it's not providing the expected format.
Sadly I find documentation really incomplete and scarce so I haven't been able to figure this out.
Anyone has a proper documentation on how to make facebook messenger work with Flex??
Thanks