diff --git a/foundation/erpnext_foundation/web_form/buy_tickets_inr/buy_tickets_inr.js b/foundation/erpnext_foundation/web_form/buy_tickets_inr/buy_tickets_inr.js
index 5c0d8fce..a00a71d3 100644
--- a/foundation/erpnext_foundation/web_form/buy_tickets_inr/buy_tickets_inr.js
+++ b/foundation/erpnext_foundation/web_form/buy_tickets_inr/buy_tickets_inr.js
@@ -1,8 +1,8 @@
 frappe.ready(function() {
 	// bind events here
 	frappe._calculate = function() {
-		frappe.web_form.field_group.set_value('amount',
-			parseInt(frappe.web_form.field_group.get_value('full_conference_tickets') || 0) * 4000
+		frappe.web_form.set_value('amount',
+			parseInt(frappe.web_form.get_value('full_conference_tickets') || 0) * 4000
 		)
 	};
 
diff --git a/foundation/erpnext_foundation/web_form/buy_tickets_paypal/buy_tickets_paypal.js b/foundation/erpnext_foundation/web_form/buy_tickets_paypal/buy_tickets_paypal.js
index 509dce75..d3ac315b 100644
--- a/foundation/erpnext_foundation/web_form/buy_tickets_paypal/buy_tickets_paypal.js
+++ b/foundation/erpnext_foundation/web_form/buy_tickets_paypal/buy_tickets_paypal.js
@@ -1,8 +1,8 @@
 frappe.ready(function() {
 	// bind events here
 	frappe._calculate = function() {
-		frappe.web_form.field_group.set_value('amount',
-			parseInt(frappe.web_form.field_group.get_value('full_conference_tickets') || 0) * 60
+		frappe.web_form.set_value('amount',
+			parseInt(frappe.web_form.get_value('full_conference_tickets') || 0) * 60
 		)
 	};