is it possible run use meta-box and setting page generator from plugin?

this code work if write in theme function.php file, but not from any plugin file. filter rwmb_meta_boxes doesn't work in plugin. tell me why?

add_filter( 'mb_settings_pages', 'prefix_options_page' );
function prefix_options_page( $settings_pages )
{
	$settings_pages[] = array(
		'id'          => 'pencil',
		'option_name' => 'pencil',
		'menu_title'  => __( 'Pencil', 'textdomain' ),
		'icon_url'    => 'dashicons-edit',
		'style'       => 'no-boxes',
		'columns'     => 1,
		'tabs'        => array(
			'general' => __( 'General Settings', 'textdomain' ),
			'design'  => __( 'Design Customization', 'textdomain' ),
			'faq'     => __( 'FAQ & Help', 'textdomain' ),
		),
		'position'    => 68,
	);
	return $settings_pages;
}
// Register meta boxes and fields for settings page
add_filter( 'rwmb_meta_boxes', 'prefix_options_meta_boxes' );
function prefix_options_meta_boxes( $meta_boxes )
{
	$meta_boxes[] = array(
		'id'             => 'general',
		'title'          => __( 'General', 'textdomain' ),
		'settings_pages' => 'pencil',
		'tab'            => 'general',
		'fields' => array(
			array(
				'name' => __( 'Logo', 'textdomain' ),
				'id'   => 'logo',
				'type' => 'file_input',
			),
			array(
				'name'    => __( 'Layout', 'textdomain' ),
				'id'      => 'layout',
				'type'    => 'image_select',
				'options' => array(
					'sidebar-left'  => 'http://i.imgur.com/Y2sxQ2R.png',
					'sidebar-right' => 'http://i.imgur.com/h7ONxhz.png',
					'no-sidebar'    => 'http://i.imgur.com/m7oQKvk.png',
				),
			),
		),
	);
	$meta_boxes[] = array(
		'id'             => 'colors',
		'title'          => __( 'Colors', 'textdomain' ),
		'settings_pages' => 'pencil',
		'tab'            => 'design',
		'fields' => array(
			array(
				'name' => __( 'Heading Color', 'textdomain' ),
				'id'   => 'heading-color',
				'type' => 'color',
			),
			array(
				'name' => __( 'Text Color', 'textdomain' ),
				'id'   => 'text-color',
				'type' => 'color',
			),
		),
	);
	$meta_boxes[] = array(
		'id'             => 'info',
		'title'          => __( 'Theme Info', 'textdomain' ),
		'settings_pages' => 'pencil',
		'tab'            => 'faq',
		'fields'         => array(
			array(
				'type' => 'custom_html',
				'std'  => __( '<strong>Having questions?</strong><br><br><a href="https://metabox.io/docs/" target="_blank" class="button-primary">Go to our documentation</a>', 'textdomain' ),
			),
		),
	);
	return $meta_boxes;
}

Anh Tran, thank you. Right, i load rwmb_meta_boxes after init. Problem solved.