Why does adding bold property seem to remove autosize in ActionScript?

Question

I have text fields that I need to set as both autosize and bold in ActionScript. For some reason, when I apply the bold formatting, the autosize=true is lost. From what I can tell, I am doing everything in the correct order. Any thoughts on what is going on are hugely appreciated. Thanks!

Here is the relevant code:

var categoryMenu:MovieClip = _root.createEmptyMovieClip("categoryMenu", 1005);

var my_fmt:TextFormat = new TextFormat();
my_fmt.bold = true;

for (var i:Number = 0; i<numCat; i++) {
    var menu:MovieClip = categoryMenu.attachMovie("menu", "menu"+i,i);
    menu._txt.txt.autoSize = true;
    menu._txt.txt.text = gallData.getMenuGall.name[i];
            //if i comment out the following line, the autosize works.
            //if i leave it in, the autosize is lost.  but i can't put this line
            //before the autosize or i lose the bold
    menu._txt.txt.setTextFormat(my_fmt);
     ...
     }

Answer 1

autoSize is not a boolean, it's a string. See the documentation.

Answer 2

what's your environment? If you're working with Flash CS? Is is possible that the text formatting defined in your code is conflicting with the textfield instance in your MovieClip?