BIRT3.7.1, Maximo7.5, After XML Source changing, report cannot run properly

The problem is: I develop report design file, everything is ok: sql query, parameters, datasource(i work with maximo 7.5, so, i develop reports in BIRT 3.7.1 and use scripted data source, which create connection with the db2 database). F.E. i need to change a huge number of labes, i do this by modifying XML Source (just "find and replace") after uploading into maximo and testing of this report i get error like this a link, while birt display everything without any mistakes and errors/

I really cannot understand how modifying XML Source of report effects on queries, maximo, data etc. Please help=) Sorry for my english Thanks!