Update frontend/src/components/admin/PlanForm.jsx

frontend/src/components/admin/PlanForm.jsx

@@ -39,6 +39,7 @@ export default function PlanForm({ plan, onSave, onCancel, isLoading }) {
   function handleSubmit(e) {
     e.preventDefault();
     const priceNumber = parseFloat(price || "0") || 0;
+    const maxStudentsNumber = parseInt(maxStudents || "1", 10) || 1;
 
     onSave({
       name,
@@ -46,6 +47,7 @@ export default function PlanForm({ plan, onSave, onCancel, isLoading }) {
       price: priceNumber,
       stripe_link: stripeLink || null,
       description: description || null,
+      max_students: maxStudentsNumber,
       is_active: isActive,
     });
   }