How to embed special characters dynamically?

programming flash
1

I’ve created dynamic textfield and textformat, I also embedded the fonts but, special characters(like č,ģ,ļ,ķ,ņ) won’t show up, how to embed them? In library I have my specific font with linkage name myFont. Here’s the code :

var myfont:Font = new myFont();

var txtFrmt:TextFormat = new TextFormat();
txtFrmt.font = myfont.fontName; 
txtFrmt.size = 50;
txtFrmt.color = 0x000000;

var txtField:TextField = new TextField();
txtField.x = txtField.y = 60;
txtField.multiline = true;
txtField.embedFonts = true;
txtField.defaultTextFormat = txtFrmt;
txtField.text = "Ķ, Ū, Ā, Ē, Ģ, Ķ, Ļ, Ņ, Č, Ž";
addChild(txtField);
txtField.width = txtField.textWidth;

From Flash UI I would go to dynamic text properties -> embed fonts and then manually enter desired special characters. But how to do it with code?
Seriously I searched a lot and can’t find the answer, surely there must be a way how to do it properly with actionscript.

Any thoughts?
Thank you.