ZSWorldEvents:
     type: world
     events:
 
         on zombie death:
-        - if <server.has_flag[Zombie_Call]> queue clear
+        - if <server.has_flag[Zombie_Call]> {
+            - queue clear
+        }
         - define Players <context.entity.location.find.players.within[50]>
         - if <def[Players].is_empty> {
             - queue clear
         }
         - flag server Zombie_Call:True duration:15s
         - foreach <context.entity.location.find.entities[ZOMBIE|SKELETON].within[50]> {
             - attack <def[value]> target:<def[Players].random>
         }