Form Validation not loading config file

Hi.

I'm trying to load the config set group from "form_validations.php" into a controller, but this always return false, without any errors;

CodeIgniter: 3.1.2, using autoload for form_validation.php library

form_validation.php

PHP Code:

<?php
$config = array(
        'signup' => array(
                array(
                        'field' => 'username',
                        'label' => 'Username',
                        'rules' => 'required'
                ),
                array(
                        'field' => 'password',
                        'label' => 'Password',
                        'rules' => 'required'
                ),
                array(
                        'field' => 'passconf',
                        'label' => 'Password Confirmation',
                        'rules' => 'required'
                ),
                array(
                        'field' => 'email',
                        'label' => 'Email',
                        'rules' => 'required'
                )
        ),
        'email' => array(
                array(
                        'field' => 'emailaddress',
                        'label' => 'EmailAddress',
                        'rules' => 'required|valid_email'
                ),
                array(
                        'field' => 'name',
                        'label' => 'Name',
                        'rules' => 'required|alpha'
                ),
                array(
                        'field' => 'title',
                        'label' => 'Title',
                        'rules' => 'required'
                ),
                array(
                        'field' => 'message',
                        'label' => 'MessageBody',
                        'rules' => 'required'
                )
        )
); 


Controller

PHP Code:

   public function Login_post()
    {
        
        $Status = $this->form_validation->run('signup');
        var_dump($Status);
        var_dump($this->form_validation->error_array());
        var_dump($this->form_validation->error_string());
        die();
} 


Return:

PHP Code:

bool(false)
array(0) {
}
string(0) "" 


Where i'm wrong?