Product variant price update with Graphql using javascript fetch

[abdurrakib528]

Hello Expert,

I have faced a problem when updating product prices using Graphql in js fetch API.

 I can get all products but could not update the product price using Graphql mutation.

Errors: message: "Field 'productVariantUpdate' doesn't exist on type 'Mutation'"

    const priceUpdate =` mutation {
            productVariantUpdate(input:{id:"gid://shopify/ProductVariant/40524123832528", price: "10"}) {
                                       productVariant {
                                        price
                                      }
                                    }
                                  }`

 const GRAPHQL_URL = 'https://dimerc-pmg.myshopify.com/api/2022-04/graphql.json';
              const GRAPHQL_BODY  = () => {
                return {
                  'async': true,
                  'crossDomain': true,
                  'method': 'POST',
                  'headers': {
                    'X-Shopify-Storefront-Access-Token': STOREFRONT_ACCESS_TOKEN,
                    'Content-Type': 'application/graphql',
                  },
                  'body': priceUpdate
                };
              }

              fetch(GRAPHQL_URL, GRAPHQL_BODY())
              .then(res => res.json())
              .then(products => {
                console.log('products', products)
              })

 The above is what I did for updating the price. Could you please help me with how can I achieve the perfect result?

Thanks in advance!