Access variable from one form to another

[question]

Hi, now its working fine i have written the follwoing

Code:

procedure TForm1.SetMyPersonID(AValue: Integer);
begin
  FQuery.FieldByName('MyPersonID').AsInteger := AValue;
end;

procedure TForm1.GetMyPersonID: Integer;
begin
  Result := FQuery.FieldByName('MyPersonID').AsInteger;
end;

is that ok to write like this, i mean normally in sql query need to query.sql.add/query.sql.open/close... but in this case it is working fine should i need to write the whole query or is that also okay just to write only

Code:

Result := FQuery.FieldByName('MyPersonID').AsInteger;