diff --git a/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.fr.md b/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.fr.md
index 0315a73ce..fd5956a89 100644
--- a/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.fr.md
+++ b/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.fr.md
@@ -8,6 +8,10 @@ lessons:
       order:
     - slug: cylindrical-coordinates-linear
       order: 1 
+    - slug: es-fr-cylindrical-coordinates-exchange
+      order: 3
+    - slug: fr-es-cylindrical-coordinates-exchange
+      order: 1
 ---
 
 !!!! *COURS EN CONSTRUCTION :* <br>