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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

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    How do your integrate paypal payment to the suggested donation amount and "other" amount

    Asked by gncjlim on May 05, 2015 at 06:51 PM

    Please show us on how to do the calculate amount  with suggested donation and "other" amount to be input by our customer

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    Answered by raul on May 05, 2015 at 07:41 PM

    You can refer to this guide to see how to do this: https://www.jotform.com/help/275-How-to-pass-a-calculation-to-a-payment-field. You would need to add a calculation widget in your form and use it to pass its value to the payment gateway.

    I've created this cloned version of your form: http://form.jotformpro.com/form/51247728598974 so you can see how it works. Feel free to clone the form to your account if you want to inspect it further.