Thanks Grant for answering me. However, after playing another few days with parameters forcearray and keyattr I still didn't get any results and wrote some lines of string manipulation code within few hours. Also the problem was, that I'm using a shared UNIX hosting somewhere and do not see any error messages at all. So, using strict mode wasn't much helpful. Anyway, got the XMLOut finally to save the file as discovered outfile parameter. But the result was, that only the element I was modifying where stored as empty string and all other elements where deleted. Should it work this way? Veiko