diff --git a/tienda_ilusion/don_confiao/static/js/add_line.js b/tienda_ilusion/don_confiao/static/js/add_line.js
index bfb38ed..4f6bc25 100644
--- a/tienda_ilusion/don_confiao/static/js/add_line.js
+++ b/tienda_ilusion/don_confiao/static/js/add_line.js
@@ -3,16 +3,27 @@ document.addEventListener('DOMContentLoaded', function(){
   var formContainer = document.getElementById('formset-container');
   var totalForms = document.getElementById('id_saleline_set-TOTAL_FORMS');
   button.addEventListener('click', function(){
-    // Clonar un formulario vacío
     var newForm = formContainer.querySelector('.form-container').cloneNode(true);
-    // Obtener el número actual de formularios
     var formCount = parseInt(totalForms.value);
-    // Actualizar los atributos de los nuevos campos del formulario
     var regex = new RegExp('__prefix__', 'g');
     newForm.innerHTML = newForm.innerHTML.replace(regex, formCount);
-    // Añadir el nuevo formulario al contenedor
+
+    var fields = newForm.querySelectorAll('[id^="id_saleline_set-"], [name^="saleline_set-"]');
+    fields.forEach(function(field) {
+      var oldId = field.id;
+      var oldName = field.name;
+
+      if (oldId) {
+        var newId = oldId.replace(/-\d+-/, '-' + formCount + '-');
+        field.id = newId;
+      }
+      if (oldName) {
+        var newName = oldName.replace(/-\d+-/, '-' + formCount + '-');
+        field.name = newName;
+      }
+    });
+
     formContainer.appendChild(newForm);
-    // Incrementar el total de formularios
     totalForms.value = formCount + 1;
   });
 });