How to show/hide navbar item based on custom decorator admin role

{% if current_user.is_authenticated %}
    {{ render_nav_item('account', 'Account', use_li=True) }}
    {{ render_nav_item('logout', 'Logout', use_li=True) }}
    {% if current_user.role == "Admin" %}
        {{ render_nav_item('admin_panel', 'Admin Panel', use_li=True) }}
    {% endif %}
{% else %}
    {{ render_nav_item('login', 'Login', use_li=True) }}
{% endif %}