Embedded Chat Inlay - error setting custom field for launch-form-fields
I'm trying to use a custom field for embedded chat inlay, release 20B. I've set it up as an attribute in my config file, following the directions in the documentation:
"launch-form-fields":["SUBJECT", "c$person_id", "FIRST_NAME*", "LAST_NAME*"]
This is a valid custom field. I've tried with a few different custom fields. I also tried removing the quotes, but of course that results in a JSON parse error.
What am I missing here?