Flash cs3-as2: embed special characters flash-xml

I made a page with a dynamic textfield which gets its text from an xml file.The text is italian, so contains characters as è è ò à. None of these are recognised if I test my page, instead of these letters I see blank spaces.
-I tried with embed, include special characters autofill, but that didn’t do anything.
-I read an article on this site about embedding international characters which says to put [COLOR=blue]System.useCodePage=true;

[/COLOR][FONT=Arial][SIZE=2]I did so, but got an error message.[/SIZE][/FONT][COLOR=blue][FONT=Arial] [COLOR=Black]Does anybody know how to solve this problem?
Best wishes to all,