Takuro Hishikawa

Thank you for your nice review!

This code is not yet tested, but here is my idea:

function rsci_meta_filter( $meta, $post, $is_update ) {

    $meta_array = array();
    $plant_ratings = array();

    $values = explode(',', $meta['plant_rating_values']);
    $dates = explode(',', $meta['plant_rating_dates']);

    foreach ($values as $i => $value) {
        $plant_ratings['plant_rating_values'] = $value;
        $plant_ratings['plant_rating_dates'] = $dates[$i];
    }

    $meta_array['cfs_plant_ratings'] = $plant_ratings;

    return $meta_array;

}
add_filter( 'really_simple_csv_importer_save_meta', 'rsci_meta_filter', 10, 3 );

Okey, plz share your code

I don’t know why Gumroad link is unavailable. Please contact him.

Sorry, what would you want to do?

Yes, you should customize my above code little, but you can do that.

Thanks, Kite

OK, your problem is the double quotation. Please do not add quotes manually, use the export option of spreadsheet software. I recommend you to use LibreOffice.