character limit

Character limit doesn't change on BDM update


I am using postgresql with bonita. There's a business object that has a string attribute with 255 character limit. I tried changing it (to several different values on different occasions like 1000 or 3000) both through studio or directly from bom.xml but changes don't apply to database. It is still 255 on database, but I can see it in xml file and Business Data Model section (on local) that it has the value I gave. If I change it on database directly, then I cannot update BDM, it gives an error and doesn't update the previous BDM with the zip I have.