Customizer custom control transport refresh

I’m building a WordPress theme and need to add custom controls in the customizer, the input field is showing up but when I change the value of input nothing happens.

Here is my code.

class WP_Customize_Custom_Control extends WP_Customize_Control {
public $type = ‘custom_control’;

function render_content(){
}
public function content_template() {
?>
<input type=”text” id=”custom_control” name=”custom_control” />
<?php
}
}

function company_customize_register( $wp_customize ){
$wp_customize->register_control_type( ‘WP_Customize_Custom_Control’ );
$wp_customize->add_setting(‘custom_smthing’, array( ‘default’ => get_theme_mod( “custom_smthing” ), ‘transport’ =>’refresh’ ) );
$wp_customize->add_control(new WP_Customize_Custom_Control($wp_customize,’custom_smthing’,
array(
‘label’ => __( ‘Custom Control’, ‘company’ ),
‘section’ => ‘body_backgrounds’,
‘settings’ => ‘custom_smthing’,
)
)
);
}
add_action( ‘customize_register’, ‘company_customize_register’ );