something small, but i don't understand

[eluser]PhilTem[/eluser]
The problem is, as your PHP interpreter tells you, in

Code:

Message: Undefined property: Data_user::$form__validation

Now have a close look at the line that causes the problem

Code:

$this->form__validation->set_message(‘required’,‘data masukan tidak sesuai’);

and tell me what the main difference between this line and the latter is

Code:

$this->form_validation->set_message(‘required’,‘data masukan tidak sesuai’);