我正在使用TFDBatchMove、TFDBatchMoveTextReader、TFDBatchMoveDataSetWriter和TFDMemTable将数据从csv文件加载到memTable数据集中。它工作得很好，除了我有一个字段有很多文本（400-500个字符），并且由于某种原因，memTable组件将字段大小限制在233个字符...字段都是由批处理组件加载的，我找不到一个选项来扩展字段大小限制，memTable也是如此。我该怎么办？

unit Unit1;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs,
  FireDAC.Stan.Intf, FireDAC.Stan.Option, FireDAC.Stan.Param,
  FireDAC.Stan.Error, FireDAC.DatS, FireDAC.Phys.Intf, FireDAC.DApt.Intf,
  FMX.Edit, FMX.Controls.Presentation, FMX.StdCtrls, Data.DB,
  FireDAC.Comp.DataSet, FireDAC.Comp.Client, FireDAC.Comp.BatchMove.DataSet,
  FireDAC.Comp.BatchMove, FireDAC.Comp.BatchMove.Text, System.Rtti,
  FMX.Grid.Style, FMX.ScrollBox, FMX.Grid, FireDAC.UI.Intf, FireDAC.FMXUI.Wait,
  FireDAC.Comp.UI, Data.Bind.EngExt, Fmx.Bind.DBEngExt, Fmx.Bind.Grid,
  System.Bindings.Outputs, Fmx.Bind.Editors, Data.Bind.Components,
  Data.Bind.Grid, Data.Bind.DBScope;

type
  TForm1 = class(TForm)
    BatchMove: TFDBatchMove;
    csvReader: TFDBatchMoveTextReader;
    datasetWriter: TFDBatchMoveDataSetWriter;
    memTable: TFDMemTable;
    btnConvert: TButton;
    FilePath: TEdit;
    StringGrid1: TStringGrid;
    FDGUIxWaitCursor1: TFDGUIxWaitCursor;
    BindSourceDB1: TBindSourceDB;
    BindingsList1: TBindingsList;
    LinkGridToDataSourceBindSourceDB1: TLinkGridToDataSource;
    procedure btnConvertClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.fmx}

procedure TForm1.btnConvertClick(Sender: TObject);
begin
  csvReader.FileName := FilePath.Text;
  BatchMove.Execute;
end;

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