oAlEvItem.Activate sComment, tTimeOn
|sComment||[optional] (String) The text note that is stored into the data together with the activated alarm/event item (it is enabled on the Storage page).|
|tTimeOn||[optional] (Date) The activation time of the alarm. If not used, the activation time equals to the time of calling this method.|
The method is synchronous, i.e. it is processed immediately by the alarm subsystem. Nevertheless writing the history to disk is asynchronous, which means that this method passes the request for writing to the history to the alarm subsystem, it is placed into the queue of requests and it is processed later by the alarm subsystem.