add_section( 'book_land_pro_section' , array( 'title' => esc_html__('Upgrade to Pro','book-land'), 'priority' => 500, ) ); $wp_customize->add_setting( 'upgrade_pro', array( 'capability' => 'edit_theme_options', 'sanitize_callback' => 'sanitize_text_field', ) ); $wp_customize->add_control( new book_land_Pro_Customize_Control( $wp_customize, 'upgrade_pro', array( 'section' => 'book_land_pro_section', 'setting' => 'upgrade_pro', )) ); } add_action( 'customize_register', 'book_land_pro_customizer' ); ?>