Use skript-worldguard

mirricraft-kitpvp.sk

@@ -228,7 +228,7 @@ on item damage:
 on region exit:
     if player's world is "minigames":
         wait 1 tick
-        if "%event-region%" contains "minigames_kitpvp_":
+        if "%region%" contains "minigames_kitpvp_":
             remove all items from player
             set the player's walk speed to 0.2
             clear {kitpvp.%player's name%.started}