DataObject re-generation and FormBuilder

Hi PEARs, I have a LAMP system installed in my computer, where I do tests and when all seems to be ok, I upload all stuff to the server. Sometimes, I must re-generate DOs on the internet server, because some fields doesn't appear. For example (real case), I added two varchar fields to some table, execute createTables, upload all things, and those fields don't appear at Form (generated by formbuilder). Normally, if I execute createTables there, all works as expected. The problem comes when I have no ssh access to remote server. Why does this happen? Can I avoid it? Thanks, Rodrigo