diff --git a/erpnext/selling/page/point_of_sale/pos_payment.js b/erpnext/selling/page/point_of_sale/pos_payment.js
index c484873..f1a166b 100644
--- a/erpnext/selling/page/point_of_sale/pos_payment.js
+++ b/erpnext/selling/page/point_of_sale/pos_payment.js
@@ -56,7 +56,7 @@
 				);
 				let df_events = {
 					onchange: function() {
-						frm.set_value(this.df.fieldname, this.value);
+						frm.set_value(this.df.fieldname, this.get_value());
 					}
 				};
 				if (df.fieldtype == "Button") {