Not showing on specified template

I am attempting to show a metabox only on a specified template, I have added the code as shown in the demo, but the metabox will not show under any conditions.

$meta_boxes[] = array( 
    'title' => esc_html__( 'Carousel', 'metabox-online-generator' ),
    'pages' => array('page'),
    'show' => array(
        'template' => array('../templates/page-product-tech-template.php'),
    ),
    'fields' => array();
);

The file I am targeting is in the adjacent folder. So when i'm specifying the path I am backing out once and entering the templates directory, is this correct?