I'm trying to ad an IO option to flightgear for output to an other system, like "--native=params". It's called rh-flight with "--rh-flight=socket,out,60,127.0.0.1,udp" as parameters but when I start FG with "fgfs --rh-flight=socket....", it says "Unknown option --rh-flight="I've added rh-flight.cxx and rh-flight.hxx and I modified fg_io.cxx, options.cxx, Makefile.am (/src/Network), Makefile.in (/src/Network), fgfs.1.in, strings-default.xml and options.xmlWhen I type "fgfs --help --verbose" I can see the option in the IO-option list but it doesn't work. Can someone tell me what I forgot to get this working?

This is a developer specific question, i suggest you ask the developers on the flightgear-devel mailinglist.I am sure they can help you better.http://www.flightgear.org/mail.html