Hi Dave, Except for Bruce, I think most of us here are newbies, and as such, I have a bit of a difficult time following what you're asking. What error does it cause? I generally have found it better not to try to do much logic in the dictionary, but rather handle it in NetTalk Web (NTW) if possible. So I might set a check box up as a byte in the dictionary, but not try to give it any attributes, then work with constraints and conditions on the NTW front end. Of course this is a problem if you're also using the dictionary to generate a Win app. But all in all, I'm not quite sure what error or problem you're having.