how can I change the header alignment of my cxGrid table view?

How can I change the header alignment of my cxGrid tableView? I try

MyGridColumn.HeaderAlignmentVert := TcxAlignmentVert.vaCenter;

but this not work :(

The code below shows how to create a cxGrid, add a TcxGridDBTableView, and set the header alignments for the TableView's headers, all entirely in code. I've done it all in code because there are so many properties in the Object Inspector for a cxGrid and its contents that it's hard to see at a glance (in the OI or the DFM) what the relevant properties are.

type
  TForm1 = class(TForm)
    CDS1: TClientDataSet;
    DS1: TDataSource;
    cxGrid1DBTableView1: TcxGridDBTableView;
    cxGrid1Level1: TcxGridLevel;
    cxGrid1: TcxGrid;
    procedure FormCreate(Sender: TObject);
  [...]
  public
    cxGrid : TcxGrid;
    cxLevel : TcxGridLevel;
    cxView : TcxGridDBTableView;
  end;
[...]
procedure TForm1.FormCreate(Sender: TObject);
var
  Field : TField;
begin
  // First, set up TClientDataSet

  Field := TIntegerField.Create(Self);
  Field.FieldKind := fkData;
  Field.FieldName := 'ID';
  Field.DataSet := CDS1;

  Field := TStringField.Create(Self);
  Field.FieldKind := fkData;
  Field.FieldName := 'Name';
  Field.Size := 40;
  Field.DataSet := CDS1;

  Field := TIntegerField.Create(Self);
  Field.FieldKind := fkData;
  Field.FieldName := 'Value';
  Field.DataSet := CDS1;

  CDS1.CreateDataSet;

  CDS1.IndexFieldNames := 'ID';

  CDS1.InsertRecord([1, 'One', 1]);
  CDS1.InsertRecord([1, 'Two', 2]);
  CDS1.InsertRecord([1, 'Three', 3]);

  CDS1.First;

  //  Next, create cxGrid, and add cxGridDBTableView
  cxGrid := TcxGrid.Create(Self);
  cxGrid.Parent := Self;
  cxGrid.Width := 400;

  cxLevel := cxGrid.Levels.Add;
  cxLevel.Name := 'Firstlevel';

  cxView := cxGrid.CreateView(TcxGridDBTableView) as TcxGridDBTableView;
  cxView.Name := 'ATableView';
  cxView.OptionsView.HeaderHeight := 100; // so we can easily see different vert alignments

  cxView.DataController.Options := cxView.DataController.Options + [dcoImmediatePost];
  cxView.DataController.KeyFieldNames := 'ID';

  cxLevel.GridView := cxView;

  cxView.DataController.DataSource := DS1;
  cxView.DataController.CreateAllItems;

  //  by this point the columns and their headers will have been created

  cxView.Columns[0].HeaderAlignmentVert := cxclasses.vaTop;
  cxView.Columns[1].HeaderAlignmentVert := cxclasses.vaCenter;
  cxView.Columns[2].HeaderAlignmentVert := cxclasses.vaBottom;
end;

For me, the headers have the correct alignments, ie

ID
    Name
           Value

Fwiw, before creating the above example, I tried setting the headers' vertical alignments on an existing project, and couldn't get it to work either, by which I mean, the headers texts all obstinately stayed in the vertical center. So I guess there must be some other setting in my existing project's grid which overrides the alignment behaviour.

Update I noticed that if I comment out the line which sets the HeaderHeight, the vertical alignment setting appears to have no effect. I think that the reason is simply that the difference in vertical position of the text caused by different alignments is too small to notice - it is only after I increase the HeaderHeight to 23 or more that there is a visible difference.