https://legacy.forums.gravityhelp.com/topic/paypal-for-invoices-user-defined-price Gravity Support Forums Topic: PayPal for Invoices | User Defined Price en-US Tue, 21 Apr 2026 09:17:34 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/paypal-for-invoices-user-defined-price#post-17488 Wed, 02 Feb 2011 14:54:36 +0000 David Smith 17488@https://legacy.forums.gravityhelp.com/ <p>Using the <strong>gform_pre_submission_filter</strong> you can update the label of the price field after the user has submitted the form. Here is an example:</p> <p><a href="http://pastie.org/1522557" rel="nofollow">http://pastie.org/1522557</a> </p> https://legacy.forums.gravityhelp.com/topic/paypal-for-invoices-user-defined-price#post-17452 Tue, 01 Feb 2011 23:46:01 +0000 jbstansell 17452@https://legacy.forums.gravityhelp.com/ <p>Okay, to clarify. I send out an invoice that has an invoice number. I invite users to pay online. The form has a field in which they identify the invoice, and the amount they want to pay. I want the invoice number to be reflected in the PayPal cart. How? </p> https://legacy.forums.gravityhelp.com/topic/paypal-for-invoices-user-defined-price#post-17345 Mon, 31 Jan 2011 18:04:16 +0000 jbstansell 17345@https://legacy.forums.gravityhelp.com/ <p>I want my users to be able to complete a form that identifies an invoice number and the amount of the payment. I'm using the "user defined price" as an option. The problem is, during the PayPal checkout, there is no reference to the "invoice number" to which the payment applies. Suggestions?</p> <p>Form located at <a href="http://www.lawjock.com/payment" rel="nofollow">http://www.lawjock.com/payment</a> </p>