Theo Neeskens mentioned recently on the linkedin "Uniface Professional Network":
Detailed technical discussions are better placed on www.uniface.info
Lots of developers there that are willing to answer questions.
LinkedIn is more for staying in touch, networking, jobs, global discussions etc.

Think in the time to come, you will get a better support putting your questions as well on TURF (http://hosted.byjones.net/turf/) and the old uniface listserver (https://groups.google.com/forum/#!forum/comp.soft-sys.app-builder.uniface)