Hey,

I think you can populate this information using calculate value in dictionary level:

var currentDate = new GlideDateTime(gs.nowDateTime());
    var closedAt = new GlideDateTime(current.getValue("closed_at"));
    var openedAt = new GlideDateTime(current.getValue("opened_at"));
    var dur;
    if (current.getValue("active") == true) {
        
        dur = new GlideDuration(GlideDateTime.subtract(openedAt, currentDate));
    } else {
        
        dur = new GlideDuration(GlideDateTime.subtract(openedAt, closedAt));
    }

    return dur;