ExecutionAdministration ea = Shark.getInstance().getAdminInterface().getExecutionAdministration();
ea.connect(userName, passWord, engineName, null);

// subPRocId為子流程序號
wfeas = ea.getProcess(subProcId).get_sequence_history(0);

if ( wfeas != null )
{
    for ( int i = 0; i < wfeas.length; i++ )
    {   
        if ( wfeas[i].event_type().equals("processCreated") )
        {
            WfCreateProcessEventAudit wpea = (WfCreateProcessEventAudit)wfeas[i];
            // parentProcId 為父流程序號
            parentProcId = wpea.p_process_key() == null ? "" : wpea.p_process_key();

            break;
        }
    }
}