Signals the addition of units to unit specifiers. Always preceded by Event.Unit.Change.Remove. Triggers for unit IDs that have been removed from the specifier tree, but may not trigger for any children of those units. You may want to use LibUnitChange instead of this event.
|units||parameter||variant||Table of the units changed. Key is the unit ID, value is the unit specifier, or "false" if the unit now has no specifier.|