https://legacy.forums.gravityhelp.com/topic/paypal-hidden-product-field-not-validating-after-dynamic-update Gravity Support Forums Topic: PayPal hidden product field not validating after dynamic update en-US Tue, 21 Apr 2026 07:25:37 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/paypal-hidden-product-field-not-validating-after-dynamic-update#post-75371 Fri, 14 Sep 2012 12:34:45 +0000 squidgemann 75371@https://legacy.forums.gravityhelp.com/ <p>Hi Alex, so simple when you know how! Thank you so much, that's solved the problem.</p> <p>All the best<br /> Andy </p> https://legacy.forums.gravityhelp.com/topic/paypal-hidden-product-field-not-validating-after-dynamic-update#post-75369 Fri, 14 Sep 2012 12:24:25 +0000 Alex Cancado 75369@https://legacy.forums.gravityhelp.com/ <p>You are getting that error because you are manipulating the product price via jQuery, and that is triggering a safety validation that GF performs on product fields. In order to disable that extra validation, you can enable to option to "Allow field to be populated dynamically" in the field editor. </p> https://legacy.forums.gravityhelp.com/topic/paypal-hidden-product-field-not-validating-after-dynamic-update#post-75325 Fri, 14 Sep 2012 09:08:20 +0000 squidgemann 75325@https://legacy.forums.gravityhelp.com/ <p>Hi Guys,</p> <p>Have you had a chance to look at this for me? I'm really confused as to why I can't make the field validate and my client is breathing down my neck!</p> <p>Thanks in advance<br /> Andy </p> https://legacy.forums.gravityhelp.com/topic/paypal-hidden-product-field-not-validating-after-dynamic-update#post-74777 Tue, 11 Sep 2012 07:26:35 +0000 squidgemann 74777@https://legacy.forums.gravityhelp.com/ <p>Hi Guys</p> <p>I've got a problem which is similar to this post (<a href="http://www.gravityhelp.com/forums/topic/pricing-field-of-type-product-doesnt-validate" rel="nofollow">http://www.gravityhelp.com/forums/topic/pricing-field-of-type-product-doesnt-validate</a>) but I can't find an answer or a solution on the forums.</p> <p>Here's what I'm experiencing:</p> <p>- I have a hidden product field for a service fee (the client is using this to cover the PayPal transaction fee)<br /> - The client needs it to be multiplied by the number of swimmers the user is paying for<br /> - I've written a short piece of jQuery to update the product field when the number of swimmers is selected:<br /> <pre><code>&lt;script type=&quot;text/javascript&quot;&gt; jQuery(&quot;#input_5_5&quot;).change(function(){ var num_swimmers = jQuery(&quot;#input_5_5 option:selected&quot;).val(); var charge = num_swimmers * 3; charge = charge.toFixed(2); jQuery(&quot;#ginput_base_price_5_34&quot;).val(&quot;£ &quot; + charge); alert( jQuery(&quot;#ginput_base_price_5_34&quot;).val() ); }); &lt;/script&gt;</code></pre> <p>The last alert shows the correct value, and matches the format of the product field when the page loads, but I get a validation error: "There was a problem with your submission. Errors have been highlighted below."</p> <p>When I inspect the page, I can see that it's saying "Please enter a valid value." for the service charge.</p> <p>Please could you let me know what I'm doing wrong? I really can't see the difference between my calculated value and the valid default value.</p> <p>URL: <a href="http://sinkorswimcardiff.com/pay-now/" rel="nofollow">http://sinkorswimcardiff.com/pay-now/</a></p> <p>Thanks!<br /> Andy </p>