BuddyPress.org

I added a custom menu item. But when i try loading the custom template when custom page opens on member profile. I use this code

function bp_gf_ua_profile_nav_add()
{
    bp_core_new_nav_item(
        array(
            'name' => __('Email preferences', 'buddypress'),
            'slug' => 'email-preferences',
            'position' => 3,
            'show_for_displayed_user' => true,
            'screen_function' => 'bp_gf_ua_profile_load_template',
            'item_css_id' => 'all-conversations'
        )
    );
}

function mb_show_posts2() {
    echo "Test Text";
}

function bp_gf_ua_profile_load_template()
{
    add_action( 'bp_template_content', 'mb_show_posts2' );
    bp_core_load_template( apply_filters( 'bp_core_template_plugin', 'members/single/email-preferences/preferences' ));
}

add_action( 'bp_setup_nav', 'bp_gf_ua_profile_nav_add' );

But always display memeber-loop template. What i doing wrong?

Thanks!