[moid]

Ничего из предложенного не работало...

Сделал так:

ds = OutlookTaskTable_q.dataSourceTable(TableNum(OutlookTaskTable));

               ds2 = OutlookTaskTable_q.dataSourceTable(TableNum(EmplTable));
               if (!ds2)
               {
                  ds2 = ds.addDataSource(TableNum(EmplTable));
                  ds2.addLink(FieldNum(OutlookTaskTable, User), FieldNum(EmplTable, EmplId));
                  ds2.joinMode(JoinMode::ExistsJoin);
                  ds2.addRange(FieldNum(EmplTable, HRMOrganizationId)).value(ArrayStr);
               }
               else ds2.findRange(FieldNum(EmplTable, HRMOrganizationId)).value(ArrayStr);