@ayama Yeah it should be pretty simple. Just find this line and copy it for each field you need to pass in:
data.product_id = jQuery(this).closest('.acf-row').find('td.acf-field-589cc27c617ab select').val();
To keep things simple you probably want to pass all 3 values all the time, then make the serverside logic based on the field that ACF is querying for. Hope that makes sense.
