so i set the defaultHeight: 1 but in reality its 2 blocks high in the plan but when i say 0 its like i said -1, is this a bug or was that meant to happen?

Hmm, i'll check it out, if you have defaultHeight = 0 it should be calculating it for you based on width and length

yeah thats what it was before i remember in .5 i think it did that were if i set up 1 fence it would only let me build 1 high, but now when i set it to 0 for some reason height is acting like i put -1 there, and when i put 1 its 2 blocks and 5 its 6 so its like its adding 1 more block to the height then what value i put in as well so it was throwing me off,