I am having some issues with calling the Skript API. I was writing a new effect called SupplyChestClickedEffect and it did not work. Spigot are able to call the onEnable method and I did not get any error when I was using the Skript API, but it just did not work. Nothing happened even the addon is not registered. Here are my source codes:

M04Plugin.java

Code (Text):

1.  
2.  
3. package tech.mmcheng55.plugin;
4.  
5. import ch.njol.skript.Skript;
6. import ch.njol.skript.SkriptAddon;
7. import org.bukkit.Bukkit;
8. import org.bukkit.plugin.java.JavaPlugin;
9. import tech.mmcheng55.java.addon.effects.SupplyChestClickedEffect;
10.  
11. import java.io.IOException;
12.  
13. public class M04Plugin extends JavaPlugin {
14.     private static M04Plugin instance;
15.     private static SkriptAddon addonInstance;
16.  
17.     public M04Plugin() {
18.         if (instance == null) {
19.             instance = this;
20.         } else {
21.             throw new IllegalStateException();
22.         }
23.     }
24.  
25.     public static M04Plugin getInstance() {
26.         if (instance == null) {
27.             throw new IllegalStateException();
28.         }
29.         return instance;
30.     }
31.  
32.     public static SkriptAddon getAddonInstance() {
33.         if (addonInstance == null) {
34.             addonInstance = Skript.registerAddon(getInstance());
35.             Bukkit.getLogger().info(addonInstance.toString());
36.         }
37.         return addonInstance;
38.     }
39.  
40.     @Override
41.     public void onEnable() {
42.         Skript.registerEffect(SupplyChestClickedEffect.class, "supply %player% at %block%");
43.  
44.         try {
45.             getAddonInstance().loadClasses("tech.mmcheng55.java.addon", "effects");
46.         } catch (IOException err) {
47.             Bukkit.getLogger().info(err.getMessage());
48.             err.printStackTrace();
49.         }
50.         Bukkit.getLogger().info("[LOADED]!!PRJP[QWEUR9WEURFPASJ");
51.     }
52. }
53.  

SupplyChestClickedEvent.java:

Code (Text):

1.  
2. package tech.mmcheng55.java.addon.effects;
3.  
4. import ch.njol.skript.Skript;
5. import ch.njol.skript.lang.Effect;
6. import ch.njol.skript.lang.Expression;
7. import ch.njol.skript.lang.ExpressionType;
8. import ch.njol.skript.lang.SkriptParser;
9. import ch.njol.util.Kleenean;
10. import org.bukkit.event.Event;
11. import org.jetbrains.annotations.NotNull;
12. import org.jetbrains.annotations.Nullable;
13. import tech.mmcheng55.addon.elements.KtSupplyChestClickedEffect;
14.  
15. public class SupplyChestClickedEffect extends Effect {
16.     static {
17.         Skript.registerEffect(SupplyChestClickedEffect.class,  "supply %player% at %block%");
18.     }
19.  
20.     @Override
21.     protected void execute(@NotNull Event event) {
22.         KtSupplyChestClickedEffect.Companion.execute(event);
23.     }
24.  
25.     @NotNull
26.     @Override
27.     public String toString(@Nullable Event event, boolean debug) {
28.         return KtSupplyChestClickedEffect.Companion.toString(event, debug);
29.     }
30.  
31.     @Override
32.     public boolean init(@NotNull Expression<?>[] expressions, int matchedPattern, @NotNull Kleenean isDelayed, @NotNull SkriptParser.ParseResult parseResult) {
33.         return KtSupplyChestClickedEffect.Companion.init(expressions, matchedPattern, isDelayed, parseResult);
34.     }
35. }
36.