Синтаксическая ошибка missing operator semicolon or near draw

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NewName:='123.txt';
RenameFile(FName, NewName);// здесь ошибка, компилятор не пропускает

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var
  Form1: TForm1;
  F: TextFile;
  str, FName,NewName: string;
  priz:boolean;
 
implementation
 
{$R *.dfm}
 
procedure TForm1.CreateFileClick(Sender: TObject);
begin
 FName:='Text1.txt';
 SaveDialog1.FileName:=FName;
 if SaveDialog1.Execute then FName:=SaveDialog1.FileName;
 
 end;
 
procedure TForm1.OpenReadFileClick(Sender: TObject);
 begin
  if (OpenDialog1.Execute) and (FileExists(OpenDialog1.FileName)) then FName:=OpenDialog1.FileName;
   AssignFile(F, FName);
   Reset(F);
   Memo1.Lines.Clear;
  while not Eof(F) do
   begin
    Readln(F, str);
    Memo1.Lines.Add(str) ;
   end;
  CloseFile(F);
 
 end;
 
procedure TForm1.RenameFileClick(Sender: TObject);
begin
 NewName:='123.txt';
 RenameFile(FName, NewName);
end;
 
procedure TForm1.ReWriteFileClick(Sender: TObject);
 begin
  AssignFile(F, FName);
  Append(F);
  Write(F, Memo1.Text);
  CloseFile(F);
 end;
 
procedure TForm1.WriteFileClick(Sender: TObject);
 begin
  AssignFile(F, FName);
  Rewrite(F);
  Write(F, Memo1.Text);
  CloseFile(F);
 end;
 
end.

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unit Unit1;
 
interface
 
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;
 
type
  TForm1 = class(TForm)
    CreateFile: TButton;
    ReWriteFile: TButton;
    OpenReadFile: TButton;
    RenameFile: TButton;
    DeleteFile: TButton;
    WriteFile: TButton;
    Memo1: TMemo;
    OpenDialog1: TOpenDialog;
    SaveDialog1: TSaveDialog;
    procedure CreateFileClick(Sender: TObject);
    procedure WriteFileClick(Sender: TObject);
    procedure ReWriteFileClick(Sender: TObject);
    procedure OpenReadFileClick(Sender: TObject);
    procedure RenameFileClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
 
var
  Form1: TForm1;
  F: TextFile;
  str, FName,NewName: string;
  priz:boolean;
 
implementation
 
{$R *.dfm}
 
procedure TForm1.CreateFileClick(Sender: TObject);
begin
 FName:='Text1.txt';
 SaveDialog1.FileName:=FName;
 if SaveDialog1.Execute then FName:=SaveDialog1.FileName;
 
 end;
 
procedure TForm1.OpenReadFileClick(Sender: TObject);
 begin
  if (OpenDialog1.Execute) and (FileExists(OpenDialog1.FileName)) then FName:=OpenDialog1.FileName;
   AssignFile(F, FName);
   Reset(F);
   Memo1.Lines.Clear;
  while not Eof(F) do
   begin
    Readln(F, str);
    Memo1.Lines.Add(str) ;
   end;
  CloseFile(F);
 
 end;
 
procedure TForm1.RenameFileClick(Sender: TObject);
begin
 NewName:='123.txt';
 RenameFile(FName, NewName);
end;
 
procedure TForm1.ReWriteFileClick(Sender: TObject);
 begin
  AssignFile(F, FName);
  Append(F);
  Write(F, Memo1.Text);
  CloseFile(F);
 end;
 
procedure TForm1.WriteFileClick(Sender: TObject);
 begin
  AssignFile(F, FName);
  Rewrite(F);
  Write(F, Memo1.Text);
  CloseFile(F);
 end;
 
end.