I want to add an annual recurring subscription option to my existing monthly recurring subscription

similar to this one:

here is my graphql mutation:

mutation {
      appSubscriptionCreate(
          name: "Basic Plan"
          returnUrl: "${url}"
          trialDays: 14
          test: true
          lineItems: [
          {
            plan: {
              appRecurringPricingDetails: {
                price: { amount: 6.95, currencyCode: USD }
                interval: EVERY_30_DAYS
              }
            }
          }
          ]
        ) {
            userErrors {
              field
              message
            }
            confirmationUrl
            appSubscription {
              id
            }
        }
    }

thanks :slightly_smiling_face: ;