How to do the sum of pause time for all tasks in a RITM ?

[SBT1]

Hello All,

I need to have the sum of pause time for all tasks of a RITM.

For the moment, I have this run script below on my workflow which permit me to retrieve the pending time for the first task.

I have several tasks and I don't know how to script the rest so that the loop continues until the end of the tasks.

Could you help me please?

var pauseDuration;
var task_sys_id;
var duration_result;
var get_tasks_sysid = new GlideRecord('sc_task');
get_tasks_sysid.addQuery('request_item', current.sys_id.toString());
get_tasks_sysid.query();
while (get_tasks_sysid.next()) {
    task_sys_id = get_tasks_sysid.sys_id.toString();

    var slaCheck = new GlideRecord('task_sla');
    slaCheck.addQuery('task', task_sys_id);
    slaCheck.query();
    while (slaCheck.next()) {

        pauseDuration = (new GlideDateTime(slaCheck.pause_duration.toString()).getNumericValue()) / 1000;
        duration_result = parseInt((pauseDuration), 10);
    }

    var hours = Math.floor(duration_result / 3600);
    var minutes = Math.floor((duration_result - (hours * 3600)) / 60);
    var seconds = duration_result - (hours * 3600) - (minutes * 60);

    // Display formating for hours
    if (hours < 10) {
        if (hours == 0) {
            hours = "00";
        } else {
            hours = "0" + hours;
        }
    }

    // Display formating for minutes
    if (minutes < 10) {
        if (minutes == 0) {
            minutes = "00";
        } else {
            minutes = "0" + minutes;
        }
    }

    // Display formating for seconds
    if (seconds < 10) {
        if (seconds == 0) {
            seconds = "00";
        } else {
            seconds = "0" + seconds;
        }
    }
}
current.variables.toto = hours + ':' + minutes + ':' + seconds;

[SBT1]

Hello Chetan,

This line 

if (!(slaCheck.pause_duration.nil()) || !(slaCheck.pause_duration=='NaN)) 

is not accepted on my runscript.

Error message : 

Do you have an idea ?

Thank you.