I had a custom wix form in my site and i made a payment gateway integration to that form And when the customer make the payment with that form and that payment details like razorpay payment or paypal payment or manual payment  is not saving in the collection along with the form details.. 
And also when the customer filled the form details and click on the book now button the details is saving in the collection..without any payment details.. 
How to interlink the form details and payment details when the payment is successful.. 
Can anyone give me the solution for this issue..! 
Is thier any other way to over come this issue..?