This is how I count incoming and incoming/outgoing - I use it to know there are unacknowledged alarms/warning present but the counter works aswell. I only use Alarm/Warning alarm classes and everything needs to be acknowledged.

You can also watch this video to get the basic functionality but you will need to play around with the filter which is the annoying part.

const AlarmFilter = "AlarmClassName = 'Alarm' AND State = 1 OR AlarmClassName = 'Alarm' AND State = 2";

const WarningFilter = "AlarmClassName = 'Warning' AND State = 1 OR AlarmClassName = 'Warning' AND State = 2 ";

// Language Codes (first Parameter): DE = 1031; EN = 1033; Default = 127

HMIRuntime.Alarming.GetActiveAlarms(127, AlarmFilter).then(

function(numAlarms){

// Write number to tag for amount of alarms

Tags("ActiveAlarms").Write(numAlarms.length);

}).catch(function(errorCode){

Tags("ActiveAlarms").Write(0);

});

HMIRuntime.Alarming.GetActiveAlarms(127, WarningFilter).then(

function(numWarnings){

// Write number to tag for amount of alarms

Tags("ActiveWarnings").Write(numWarnings.length);

}).catch(function(errorCode){

Tags("ActiveWarnings").Write(0);

});