Modify subscription price and frequency

get-subscription-url.js

export function RECURRING_CREATE(url) {
  return gql`
    mutation {
      appSubscriptionCreate(
          name: "Super Duper Plan"
          returnUrl: "${url}"
          test: true,
          trialDays: 7,
          lineItems: [
          {
            plan: {
              appRecurringPricingDetails: {
                  price: { amount: 10, currencyCode: USD }
              }
            }
          }
          ]
        ) {
            userErrors {
              field
              message
            }
            confirmationUrl
            appSubscription {
              id
            }
        }
    }`;
}