Delphi error E2015 how to fix?

Question

Delphi

Hello, help me solve the problem, I can not understand what the error is. Thanks in advance!

procedure TForm1.bStartClick(Sender: TObject);
var cost: double;
begin
  cost := StrToFloat(eStart.Text);

  if cTax.Items = 1 then       //Выдает тут ошибку E2015 Operator not applicable to this operand type
  begin
    eResult.Text := FloatToStr(1.13 * cost);
    Com.Name := 'Налог составляет 13%';
  end;
end;

end.

Answer 1

Items is a list and you are comparing it to a number.
I guess you need the ItemIndex property