Question About Validation Class

[eluser]gedev2006[/eluser]
Yeh i thought of that, but then would you check the rules the exact same way ??

Also, in the custom error fields say:

$fields['zip'] = "Zip Code";

Codeigniter adds its own message to the end so the output of the error would read something like

Zip Code field may only contain alpha-numeric characters.

How do i prevent code igniter adding "field may only contain alpha-numeric characters." to the end so its a completely custom error message. $this->validation->set_message ( "zip", "bla bla" ) does nothing!