trying to fix barcode scanner in sales 2

app/views/sales/_form.html.erb

@@ -1,5 +1,6 @@
 <%= form_for(@sale, :remote => true, :html => {:class=>"form-horizontal", :id=> "sale_form"}) do |f| %>
 	<div class="portlet-body form">
+		<%= hidden_field_tag :barcode_for_sale %>
 		<!-- este error explanation se usa para mostrar errores de presales e inventarios -->
 		<!-- <div id="error_explanation"></div> -->
 		<!-- este error explanation es cuando falla alguna validacion de la venta en sí -->
@@ -326,7 +327,7 @@
 		});
 	});
 
-	$('#sale_form #typeahead').codeScanner({
+	$('#barcode_for_sale').codeScanner({
 		maxEntryTime: 200, // milliseconds
 		minEntryChars: 7,  // characters
 		onScan: function ($element, code) {