Buddypress -Add new link in user profile menu (bp_setup_nav)

<?php
add_action( 'bp_setup_nav', 'bboss_add_bpnav' );
function bboss_add_bpnav(){
    $bp = buddypress();

    bp_core_new_nav_item( array(
        'name' => __( 'About', 'TEXTDOMAIN' ),
        'slug' => 'about',
        'parent_url' => $bp->loggedin_user->domain . $bp->slug . '/',
        'parent_slug' => $bp->slug,
        'screen_function'   => 'bboss_bpnav_screen',
        'position' => 40 ,
        'default_subnav_slug' => 'about-me',
    ) );

    bp_core_new_subnav_item( array(
        'name' => __( 'About Me', 'TEXTDOMAIN' ),
        'slug' => 'about-me',
        'parent_url' => $bp->loggedin_user->domain . $bp->slug . '/' . 'about/',
        'parent_slug' => 'citations',
        'screen_function'   => 'bboss_bpnav_screen',
        'position' => 11,
        'item_css_id' => 'about-me',
    ) );
}

function bboss_bpnav_screen(){
    add_action( 'bp_template_title', 'bboss_bpnav_screen_title' );
    add_action( 'bp_template_content', 'bboss_bpnav_screen_content' );
    bp_core_load_template( apply_filters( 'bp_core_template_plugin', 'members/single/plugins' ) );
}

function bboss_bpnav_screen_title(){
    _e( 'About', 'TEXTDOMAIN' );
}

function bboss_bpnav_screen_content(){
    //screen content
    echo "<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent placerat ac justo eget euismod. Curabitur a pretium sapien. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque vulputate finibus metus, ac dapibus massa venenatis a. Sed pretium fringilla quam, quis sollicitudin sapien tincidunt nec.</p>";
}