diff --git a/middlewares/autoGrading.js b/middlewares/autoGrading.js
index 27ae29c..2b1bfa6 100644
--- a/middlewares/autoGrading.js
+++ b/middlewares/autoGrading.js
@@ -55,8 +55,8 @@ export const checkCorrectAnswers = async (req, res, next) => {
             where: { ID_ADMIN_EXERCISE },
           });
           if (matchingPairs && matchingPairs.length > 0) {
-            const studentAnswers = ANSWER_STUDENT.split(",").map((pair) => {
-              const [left, right] = pair.split("-");
+            const studentAnswers = ANSWER_STUDENT.split("|").map((pair) => {
+              const [left, right] = pair.split(">");
 
               return {
                 LEFT_PAIR: left ? left.trim() : "",