Problems with the encoding

[majabat]

I’m loading a normal xml file that is written in Spanish. It is supposed to be loaded with UTF-8 (the default value) encoding. But for my surprise, every character that isn’t included in the English characters set it’s rendered wrong.
Why is that, I don’t know. I’m using the System.useCodepage property set to true to avoid this problem, but I know this isn’t the best solution, because if the Flash file is loaded in a computer that doesn’t share the same code page it won’t work properly.
I hope somebody know how to fix this problem.
Thank you.