Flash MX 2004.
symbolInstance.accName
Property; a string that is equivalent to the Name field in the Accessibility panel. Screen readers identify objects by reading the name aloud. This property is not available for graphic symbols.
The following example stores the value for the Accessibility panel name of the object in the theName variable:
var theName = fl.getDocumentDOM().selection[0].accName;
The following example sets the value for the Accessibility panel name of the object to Home Button:
fl.getDocumentDOM().selection[0].accName = "Home Button";