PayPal Subscription Button Coupons - paypal

Question

I am using Paypal buttons to subscribe customers to a plan.
I am trying to apply coupons on the Paypal buttons without any luck.
This is the code that generate the Paypal button on the frontend:
paypal.Buttons({
style: {
shape: 'pill',
color: 'blue',
layout: 'vertical',
label: 'subscribe'
},
createSubscription: function (data, actions) {
return actions.subscription.create({
"plan_id": "<PAYPAL_PLAN_ID>"
});
},
onApprove: function (data, actions) {
console.log('success');
}
}).render('#paypal-button-container');
On the documentation I saw that I need to define a javascript variable and I tried
var discnt=10;
And:
var discount_amount=10;
None of this variables are working.
Even if the discount will work this way, I want to give the marketing team to define Coupons on their own, and give it to the customers.
Anyone might know how to add coupons to paypal.Buttons?

Answer 1

In addition to the plan_id , you can pass a plan object which overrides the provided plan's details with a different amount, and with a description that reflects the text "discount" or "coupon applied" somewhere.
Parameters for a subscription create call are documented here: https://developer.paypal.com/api/subscriptions/v1/#subscriptions-create-request-body
So for instance, something like
return actions.subscription.create({
"plan_id": "<PAYPAL_PLAN_ID>",
"plan" : {
"name" : "My Service - $10 coupon",
"billing_cycles" {
/* New billing cycles object with lower amount */
}
}
}