Additional cost from multiple custom fields during WooCommerce checkout

I’ve added some custom fields to my website that show up in the checkout. It’s about child registration for a Summer Camp.

They are select fields:

function person_details( $checkout ) {
    global $woocommerce;

    $count = $woocommerce->cart->cart_contents_count;
    $i = 0;

    for( $k=1; $k<= $count; $k++ ) {
        $i++;
        
        print ('<h3>Gegevens van kind #'.$i.'</h3>');

        woocommerce_form_field( 'cstm_care'.$i, array(
            'type'                       => 'select',
            'required'                   => true,
            'class'                      => array( 'my-field-class form-row-last' ),
            'label'                      => __( 'Voor- en na zorg' ),
            'options'                    => array(
                    'Geen'                   => __( 'Geen', 'njengah' ),
                    'Voorzorg'               => __( 'Pre-care (€30)', 'njengah' ),
                    'Nazorg'                 => __( 'Aftercare (€30)', 'njengah' ),
                    'Voor- en na zorg'       => __( 'Pre- & Aftercare (€50)', 'njengah' )
        )), $checkout->get_value( 'cstm_care'.$i ));
    }
}

I want to change the total during the checkout based on the chosen options:

• Pre-care (€30)
• Aftercare (€30)
• Pre- & Aftercare (€50)

How can I achieve this? Is it even possible?

You need to sign in to view this answers