paradox7 tables-creating secondary index without primary

has anyone done this successfully?
i can't seem to create a secondary (maintained) index without first
creating a primary.
However, i can do so using database desktop.

kinda strange.
heres a code snipit: (the table has only 5 fields - all strings)
procedure TfrmManit.SortNoticeTags;
begin
  //this will just add an index to the notice tag table based on the
alpha field only.
  //close the table
  dmTick.tblNoticeTag.Close;
  dmTick.tblNoticeTag.AddIndex('NewIndex', 'AlphaField',
[ixCaseInsensitive]);
  dmTick.tblNoticeTag.Open;
end;

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