AckSelected([Operator])

Allows acknowledging the selected alarms. If there is no selected alarm in E3Alarm, this method fails. Users may acknowledge the alarm (in this case, a new record is inserted into the Database, indicating the acknowledgment), and in E3Alarm the corresponding row indicates that it was acknowledged. Operator is an optional String indicating the name of the operator that acknowledged the alarm. This value is displayed on E3Alarm's Operator column. If omitted, the current E3 Viewer's user is used or "(No User)", if there is no user logged on. For the acknowledgment itself, the logged-on user must have the Alarm acknowledgment permission.