Configuration [passed_header_prefix = true] not working

I have edited /etc/nimble/nimble.conf and changed the User-Agent string, and it reflects OK in my origin.
However, when I try to add another header from my peer, this header is not passed tru the nimble streamer.

For anybody that is trying to pass headers from client thru nimble to the origin, set pass_headers = true in nimble.conf

Thank you for noticing, we've fixed this article: http://blog.wmspanel.com/p/nimble-streamer-configuration.html