Gets or sets a custom data of the user-selected file (AKA tag).
$au.imageUploaderFlash('uploaderID').files().set(index).tag(value); value = $au.imageUploaderFlash('uploaderID').files().get(index).tag();
Type: String
The tag of this file, i.e. an arbitrary string containing some data associated with this particular file. It is uploaded to the server as Tag_i
POST variable.