https://legacy.forums.gravityhelp.com/topic/invoice-number-appended-to-product-field-label-paypal Gravity Support Forums Topic: Invoice Number Appended to Product Field Label - PayPal en-US Sun, 19 Apr 2026 20:41:11 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/invoice-number-appended-to-product-field-label-paypal#post-79457 Sun, 07 Oct 2012 21:56:49 +0000 Chris Hajer 79457@https://legacy.forums.gravityhelp.com/ <p>The hook is documented here for anyone curious:<br /> <a href="http://www.gravityhelp.com/documentation/page/Gform_paypal_invoice" rel="nofollow">http://www.gravityhelp.com/documentation/page/Gform_paypal_invoice</a> </p> https://legacy.forums.gravityhelp.com/topic/invoice-number-appended-to-product-field-label-paypal#post-79399 Sun, 07 Oct 2012 09:43:23 +0000 WebEndev 79399@https://legacy.forums.gravityhelp.com/ <p>btrilli,</p> <p>That's awesome, I will try it out.</p> <p>Thanks for the help! </p> https://legacy.forums.gravityhelp.com/topic/invoice-number-appended-to-product-field-label-paypal#post-79323 Sat, 06 Oct 2012 20:56:15 +0000 btrilli 79323@https://legacy.forums.gravityhelp.com/ <p>There is actually a way to send an invoice # to paypal. I used the following code:</p> <pre><code>//Gravity Forms PayPal Invoice Edits add_filter(&quot;gform_paypal_invoice&quot;, &quot;change_invoice&quot;, 10, 3); function change_invoice($invoice_id, $form, $entry){ return $entry[&quot;10&quot;];//field ID you want to be the invoice number }</code></pre> https://legacy.forums.gravityhelp.com/topic/invoice-number-appended-to-product-field-label-paypal#post-63066 Wed, 20 Jun 2012 11:21:22 +0000 WebEndev 63066@https://legacy.forums.gravityhelp.com/ <p>I have a form (form ID 4) where I used a "User Defined Price" Product field (field ID 4), to collect the amount that the user is going to pay. I also have a Single Line Text field (field ID 10) that the user inputs their invoice number (invoice was mailed out to them).</p> <p>Since PayPal has nothing available to send over a reference or invoice number, I want to append 'Inv #' and the input from field 10, to the label of field 4, and send that to PayPal.</p> <p>I did some research, and know what I need to use gform_pre_submission_filter, but I don't know where to start to make this work. (I saw this <a href="http://www.gravityhelp.com/forums/topic/paypal-for-invoices-user-defined-price" rel="nofollow">http://www.gravityhelp.com/forums/topic/paypal-for-invoices-user-defined-price</a>, but it is not what I need because it always updates 'invoice 123', and I can't make it work).</p> <p>How is this done (hi David Smith lol)?<br /> Help is greatly appreciated!!<br /> Thanks!! </p>