# `Stripe.Params.BillingPortal.SessionCreateParams.FlowData.AfterCompletion.HostedConfirmation`
[🔗](https://github.com/jeffhuen/tiger_stripe/blob/main/lib/stripe/params/billing_portal/session_create_params.ex#L77)

Nested parameters.

# `t`

```elixir
@type t() ::
  %Stripe.Params.BillingPortal.SessionCreateParams.FlowData.AfterCompletion.HostedConfirmation{
    custom_message: String.t() | nil
  }
```

* `custom_message` - A custom message to display to the customer after the flow is completed. Max length: 500.

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*Consult [api-reference.md](api-reference.md) for complete listing*
