Flash MX 2004.
Library.updateItem([namePath])
stringSpecifies the name of the item. If the item is in a folder, specify its name and path using slash notation. This is the same as right-clicking on an item and selecting Update from the menu in the user interface. If no name is provided, the current selection is updated. This parameter is optional.
true if Flash updated the item successfully; false otherwise.
booleanMethod; Updates the specified item.
The following example displays a dialog box that shows whether the currently selected item is updated (true) or not (false):
alert(fl.getDocumentDOM().library.updateItem());