diff --git a/CoPO b/CoPO
index 86975e92..2d526ead 160000
--- a/CoPO
+++ b/CoPO
@@ -1 +1 @@
-Subproject commit 86975e924df9f7d0bee701955228e6855ae3f9ff
+Subproject commit 2d526eadc72f6f605873080cd40771e83be808bf
diff --git a/README.md b/README.md
index 9d278e19..dde9e0e8 100644
--- a/README.md
+++ b/README.md
@@ -40,3 +40,9 @@ Training process 4.7h
 python train_all_ippo.py --exp-name my_ippo
 ```
 Training process 7.3h
+
+## how to evaluate
+```
+python eval.py --root my_cl
+python eval.py --root my_ippo
+```
\ No newline at end of file