Kender

I'm making a kender in the 3/3.5 version of fantasy grounds unity. I've added everything into the traits and when i drag the race onto a character sheet everything works except for one of the items. I'm trying to add a trait that has a -4 to concentration while adding +2 to search, move silently, and sleight of hand. While it adds the +2 to the three latter it doesn't add the -4 to concentration at all. I've tried all in one trait and doing the +'s and -'s separately for these traits. Is there something i'm doing wrong or does fantasy grounds not do a -4 to checks?

Have you checked this page for info? 4E Effects - Fantasy Grounds Customer Portal - Confluence (atlassian.net)
Can you send us some screen shots of what you have set up? Hard for us to help without more info.

I don't see anything in the wiki which suggests that FG will recognise concentration as a skill in 3.5.

I've moved the thread into the 3.5 forum where you may have a better chance of someone who knows that ruleset well being able to answer your question.