Hi, I have sandbox account of paypal . i am trying to make payment through credit card by using node api http://runnable.com/UXgyne_v2oZyAAC-/pay-with-a-credit-card-using-paypal-api-for-node-js its working but here is a problem when user pay payment then it did not check is user login or not . can you please help me how i may set login validation check before calling this api so that only those user send money how is login and then match them credit card number with login user. Thanks
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