gistfile1.txt

var stripe = require('stripe')('sk_test_XXXX');

stripe.subscriptions.create({
  customer: "cus_XXXXX",
  plan: "testidreuse",
  trial_end: 'now'
}, function(err, subscription) {
    if(err) {
      console.log("[ERROR] oops: ", err);
      return;
    }
    console.log("subscription created: ", subscription);

    stripe.subscriptions.update(
      subscription.id,
      {
        coupon: "fakE", 
        trial_end: 'now'
      },
      function(err, subscription) {
        if(err) {
          console.log("[ERROR] oops2: ", err);
          return;
        }
        console.log("subscription updated: ", subscription);
      }
    );
  }
);