I mean that a range might not make much sense as the numbers are meaningless.
If you have for example forumid's 1, 2 & 3. 1 & 3 couldbe in the same category, where forumid 2 could be totally unrelated. So using a range would not make much sense.
I see what you mean. As the id's are based on just like members that join, therefore if when making my forum I added some forums later and added some within some existing cats, the ranges might not be accurate.
I just wish there was a way to do it though, since there will be large chunks of one section we're using a similar code for that has a ton of forums, but I guess I could do it backwards and just restrict all the other id's on the forum, except for the big section. Therefore making my work less tedious.