One Click Payments with PayPal Payments PRO

I'm working on an event manager project and I'd like to make it so when users create their account they will have to accept a PayPal Billing Agreement. Once this happens I would like them to be able to click purchase on an event and it immediately be charged to their PayPal account. I have PayPal Payments Pro ready to go, just have to get this working.

Is this a possibility with PayPal, or do I have to go a different route with this?


I found that you can use the SetCustomerBillingAgreement API Operation to setup the billing agreement during signup. Then when charging for a payment, you can use the DoReferenceTransaction API Operation and use the Billing Agreement ID that was returned in the previous operation.

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