The Arguments object is a set of named FactList objects that contains data for metrics or for KPIs. All KPI calculations are supplied with two Arguments: one for metrics and another for KPIs. These two Arguments will contain the data for the metrics and KPIs configured in the KPIs parameters:
The above example configuration for a KPI will populate the metrics Argument with two FactLists, one for Closed Issues and the other for Reopened Tickets and the kpis FactList will be empty