Вот так надо было:
X++:
ds = OutlookTaskTable_q.dataSourceTable(TableNum(OutlookTaskTable));
ds2 = OutlookTaskTable_q.dataSourceTable(TableNum(EmplTable));
if (!ds2)
{
ds2 = ds.addDataSource(TableNum(EmplTable));
StrRange = '((((OutlookTaskTable.Ot = "%1") || (OutlookTaskTable.User = "%2") || (HRMOrganizationId = "%3")) && (EmplId = OutlookTaskTable.User)))';
ds2.addRange(FieldNum(EmplTable, RecId)).value(strfmt(StrRange, CurUserId(), CurUserId(), "ИС"));
}