KSC Open API  13.1
Kaspersky Security Center API description
GroupTaskControlApi::RequestStatistics ( array  pTasksIds)

Request statistics of the given tasks.

Actual statistics for the tasks will be reported by appropriate "KLEVP_EventGroupTaskStats" events publications, event parameters:

Parameters:
pTasksIds[in] (array) - array of the tasks identifiers, each item is paramString
Note:
to get task ids you can use Tasks.GetAllTasksOfHost