So one of my offset sketch got broken after I generated a fillet (which is stupid, happens every time if I filleted a refered edge, I think SW should retain the imformation of the origin edge just for reference. dimention will break, too.), then I open the "show/add relation" tab and use another edge to replace the original one for offset relation. but the then the direction of the dimention got reversed. It was an inward offset, now it's outward and I can't find a way to reverse it besides delete everything and sketch again.

Anyone knows how? Thanks a lot!