Tengo el siguiente script, mi pregunta se da después del script.

 <script type="application/ld+json"> { "@context": "http://schema.org/", "@type": "Product", "name": "Bat, "aggregateRating": { "@type": "AggregateRating", "ratingValue": "4.9", "ratingCount": "77" }, "offers": { "@type": "AggregateOffer", "lowPrice": "5.76", "highPrice": "8", "availability": "http://schema.org/InStock", "priceCurrency": "USD" } }

Quiero actualizar ratingValue y ratingCount