Gravity Support Forums Topic: How do I limit the amount of a transaction allowed on a form

Gravity Support Forums Topic: How do I limit the amount of a transaction allowed on a form https://legacy.forums.gravityhelp.com/topic/how-do-i-limit-the-amount-of-a-transaction-allowed-on-a-form Gravity Support Forums Topic: How do I limit the amount of a transaction allowed on a form en-US Mon, 20 Apr 2026 01:27:36 +0000 http://bbpress.org/?v=1.0.1 <![CDATA[Search]]> q https://legacy.forums.gravityhelp.com/search.php FM on "How do I limit the amount of a transaction allowed on a form" https://legacy.forums.gravityhelp.com/topic/how-do-i-limit-the-amount-of-a-transaction-allowed-on-a-form#post-27610 Sat, 11 Jun 2011 11:35:02 +0000 FM 27610@https://legacy.forums.gravityhelp.com/ Hi all , I am using a GF on a political site where I have radio buttons to let visitors check a predetermined amount for a donation or contribution. I am currently using PayPal but have just bought cart66 ( formerly PHPurchase) as it allows to integrate a cart into GF to collect $ using PayPal, and a gateway like Authorize.net. Here is an example of what I am trying to do. Visitor comes to the site to make a donation and selects the $100.00 radio button they proceed to the cart and there is a "continue shopping button" they decide to increase the amount and select "$250.00 radio button" this would put the amount by law allowed over the legal maximum limit of $250.00 I am wondering if there is a way to add a "conditional statement to the GF" so that it will not let the total amount exceed $250.00 * I am hoping that this can be accomplished via the form and is not a cart66 issue, but realize it might need to have something addressed there as well. I hope that I have explained the above clearly. Here is a URL of a test page ( made private ) where you can see what I am talking about if you add an amount to the cart and then increase it. - note on this test page the transaction will not let you make the actual transaction as I have not hooked the cart up yet until I can solve this problem. Here is the URL I mentioned above <a href="http://davisforhartfordtreasurer.com/test-transaction/" rel="nofollow">http://davisforhartfordtreasurer.com/test-transaction/</a> you can see what I am talking about when you advance the form and it takes you to the cart <a href="http://davisforhartfordtreasurer.com/store/cart/" rel="nofollow">http://davisforhartfordtreasurer.com/store/cart/</a> Once on this page I can just keep adding more and more purchases - and I need to be able to cap the total amount allowed to $250.00 Know this might be a complicated one- many thanks to any and all that take the time to respond- hope i can play if forward on something else.