diff --git a/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.es.md b/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.es.md
index 0b9598d26..ee1d56856 100644
--- a/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.es.md
+++ b/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.es.md
@@ -4,6 +4,8 @@ published: true
 routable: false
 visible: false
 lessons:
+    - slug:
+      order:
     - slug: cylindrical-coordinates-linear
       order: 1
 ---
@@ -14,7 +16,6 @@ lessons:
 
 <!--MetaDato : INS 1°année -->
 
-
 <!-- Partie principale $`\longleftarrow`$ Coordonnées cylindriques N3 -->
 
 #### Coordenadas cilíndricas / Coordonnées cylindriques / Cylindrical coordinates N3