Item issues

[iggi]

I have been trying to create items, but I always get this error:

"Run-time error '-2147217871 (80040e31)' : field 'UNK132' doesn't have a default value"

I made a makeshift fix, but I fear in my lack of knowledge I messed something up worse than what it was, this is the query I ran:

ALTER TABLE `items` CHANGE `UNK132` `UNK132` TEXT NULL;

it no longer gives me the error when I use navicat, but it will still tell me the same thing when I use the item editor it gives me the same error. Could someone help me with what I did wrong? Thanks.