Milliseconds duration (#1439)

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Author: cschmidt82

Flow Actions/Milliseconds to Duration/millisecondsToDuration.js

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+(function execute(inputs, outputs) {
+
+var gdt0 = new GlideDateTime("1970-01-01 00:00:00"); //Epoch DateTime
+var gdt1 = inputs.milliseconds;
+gdt0.add(gdt1); // Adds the milliseconds to the epoch date/time
+
+outputs.time = gdt0.toString(); 
+
+})(inputs, outputs);  

Flow Actions/Milliseconds to Duration/readme.md

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+When you use flow designer to calcualte the difference between two duration fields, these duration fields need to be changed into milliseconds using dateNumericValue(). This can be done in a flow variable similar to the example below:
+
+var timeWorked = fd_data.trigger.current.u_total_time_worked;
+timeWorked =  timeWorked.dateNumericValue();
+
+var estimatedTime = fd_data.trigger.current.change.u_impact_assessment.u_change_request_effort_total;
+estimatedTime =  estimatedTime.dateNumericValue()
+
+var remainingTime = estimatedTime - timeWorked;
+
+return remainingTime;
+
+To be able to convert the millisections back into a duration fields, this flow designer action uses:
+
+- the milliseconds (reaminingTime) from the calculation as the input in an integer value
+- the the code will add the milliseconds to the ServiceNow Epoch DateTime which the duration fields uses and then returns the time difference back into a string that can be added to a duration field
+- the output of the action needs to be set to the time as a duration type field