_accProps property:

Lets you control screen reader accessibilityoptions for SWF files, movie clips, buttons, dynamic text fields, and input textfields at runtime. Theseproperties override the corresponding settings available in the Accessibilitypanel during authoring. For changes to these properties to take effect,you must call Accessibility.updateProperties().

Its properties are "silent, forceSimple, name, description, shortcut".

We can simply store the shortcut values to that movieclip thats all.

Regards
A.Ramesh