Actionscript 3 Embed variable must not have an existing value

[armaluca]

GoodMorning!
guys i have a document class(Main) calling another class(Sub).
So inside of "Main" we have:

sub:Sub=new Sub();
addChild(sub);

In "Main" class we have "Arial" font embedded like this:

[Embed(source="c:/windows/fonts/arial.ttf", fontFamily = "_Arial")]
private var _Arial:Class;

In "sub " we have several textFields with "arial"(device font) as well.
So if I call "sub" inside of "Main" i receive this error message:


"Main.as An Embed variable must not have an existing value. "

Where's the problem?
And if i would like to use embedded "arial" in both classes what should i do??

thanx!