fix leveling for Kaleh and Nym in Utbs (#8152)

data/campaigns/Under_the_Burning_Suns/units/quenoth/Youth.cfg

@@ -44,6 +44,38 @@ _"Nym is Kaleh’s childhood friend, a young, rebellious lady with quick wits an
         increase=8
 #endif
     [/effect]
+    [effect]
+        [filter]
+            level=1
+#ifdef EASY
+            formula="max_experience > 24"
+#endif
+#ifdef NORMAL
+            formula="max_experience > 28"
+#endif
+#ifdef HARD
+            formula="max_experience > 33"
+#endif
+        [/filter]
+        apply_to=level
+        set=2
+    [/effect]
+    [effect]
+        [filter]
+            level=2
+#ifdef EASY
+            formula="max_experience > 41"
+#endif
+#ifdef NORMAL
+            formula="max_experience > 46"
+#endif
+#ifdef HARD
+            formula="max_experience > 54"
+#endif
+        [/filter]
+        apply_to=level
+        set=3
+    [/effect]
 #enddef
 
 #define KALEH_ADVANCEMENTS
@@ -862,6 +894,11 @@ _"Nym is Kaleh’s childhood friend, a young, rebellious lady with quick wits an
     movement_type=quenoth_foot
     movement=6
     hitpoints=32
+    # The evolution of this unit is carried out only with AMLAs so that it takes two amlas
+    # to reach level two then two more for level 3.
+    # As the unit variables do not include the number of amla achieved,
+    # the maximum experience is the only one that can be directly used in advancement without resorting to an external lua type function.
+    # Do not modify this value without also modifying the max_experience checks in the custom AMLAs
     experience=16
     level=1
     profile=portraits/kaleh.webp