Trial_period_days: 7 doesn't seem to be recognized in my node function. Any idea why this happens? Am I missing a variable? Publishing to this point will result in integration errors...

const subscription = await stripe.subscriptions.create({
                customer: customer.id,
                items: [{ price: "price_1KZ3nTGxUje7SlyIDUfIXkr3" }],
                payment_settings: {
                  payment_method_options: {
                    card: {
                      request_three_d_secure: "any",
                    },
                  },
                  payment_method_types: ["card"],
                  save_default_payment_method: "on_subscription",
                },
                trial_period_days: 7,
                expand: ["latest_invoice.payment_intent"],
              });