I am creating a form that has 3 request options on it - 2 require a fee, and the other 1 does not. Is there a way to route a user to a payment page URL if they select one of the two options that require a fee, or route the other non-fee one to the ending 'thank you' page, or does this need to be split into two forms?

We use the payment URL option in the message start event successfully for other forms.

I'm on v11, using the new designer for this form.

I've tried using the webhook activity with an exclusive gateway after the Start Message, but it complains of the URL even though I have a full https address. 

Thank you!