Create a zero-dollar recurring app charge with a capped amount using cURL

curl.txt

curl --request POST \
  --url 'https://yourshop.myshopify.com/admin/recurring_application_charges.json' \
  --header 'content-type: application/json' \
  --header 'x-shopify-access-token: yourtoken' \
  --data '{
  "recurring_application_charge": {
    "name": "Super Duper Plan",
    "price": 0,
		"capped_amount" : 10,
		"terms": "test",
    "return_url": "http://super-duper.shopifyapps.com"
  }
}'