PHP - Pass Controller Variable to the CodeIgniter / Active Menu View

I want to make a form of the active menu stay colorful, so I separated my template has:

View: Menu_lateral.php - place where the side menu is;

Controller: General: Where would I tell which menu is active;

In the view I did:

<?php
    $ativo = array();
    $ativo[0] = "";

    $ativo[$current] = 'class="active"';
?>

E

<li class="nav-item <?php echo $ativo[0];?> ">

Already in the controller:

$this->load->view('dashboard/template/menu_lateral', $current = 0);

But it returns me:

A PHP Error was encountered
Severity: Notice

Message: Undefined variable: current

Filename: template/menu_lateral.php

Line Number: 5

Backtrace:

File: C:\xampp\htdocs\teste\application\views\dashboard\template\menu_lateral.php
Line: 5
Function: _error_handler

File: C:\xampp\htdocs\teste\application\controllers\Geral.php
Line: 10
Function: view

I believe that I am not loading correctly / correctly calling the variable.