Solved Not Working

Does anyone know why this isn't working?

Code:java

    public void deleteArena(Arena arena) {
        if(arenas.contains(arena)) {
 
            List<String> list = plugin.sm.getArena().getStringList("Arenas");
            list.remove(arena.getName());
 
            plugin.sm.getArena().set("Arenas", list);
 
            plugin.sm.getArena().set(arena.getName(), null);
            plugin.sm.getArena().set("Arenas", list);
            plugin.sm.saveArena();
 
            plugin.sm.getSign().set(arena.getName(), null);
            plugin.sm.saveSign();
 
            plugin.sm.getSpawn().set("Spawns." + arena.getName(), null);
            plugin.sm.saveSpawn();
 
            arenas.remove(arena);
        }
    }
 

SettingsManager

Code:java

import java.io.File;
import java.io.IOException;
 
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.plugin.Plugin;
 
public class SettingsManager {
 
    static SettingsManager instance = new SettingsManager();
 
    public static SettingsManager getInstance() {
        return instance;
    }
 
    Plugin p;
 
    FileConfiguration spawn;
    File sfile;
 
    FileConfiguration arena;
    File afile;
 
    FileConfiguration sign;
    File snfile;
 
    FileConfiguration data;
    File dfile;
 
 
 
    public void setupSpawn(Plugin p) {
 
        sfile = new File(p.getDataFolder(), "spawns.yml");
 
        if (!sfile.exists()) {
            try {
                sfile.createNewFile();
            }
            catch (IOException e) {
                Bukkit.getServer().getLogger().severe(ChatColor.RED + "Could not create spawns.yml!");
            }
        }
        spawn = YamlConfiguration.loadConfiguration(sfile);
    }
 
    public FileConfiguration getSpawn() {
        return spawn;
    }
 
    public void saveSpawn() {
        try {
            spawn.save(sfile);
        }
        catch (IOException e) {
            Bukkit.getServer().getLogger().severe(ChatColor.RED + "Could not save spawns.yml!");
            e.printStackTrace();
        }
    }
 
    public void reloadSpawn() {
        spawn = YamlConfiguration.loadConfiguration(sfile);
    }
 
    public void setupArena(Plugin p) {
 
        afile = new File(p.getDataFolder(), "arena.yml");
 
        if (!afile.exists()) {
            try {
                afile.createNewFile();
            }
            catch (IOException e) {
                Bukkit.getServer().getLogger().severe(ChatColor.RED + "Could not create arena.yml!");
                e.printStackTrace();
            }
        }
        arena = YamlConfiguration.loadConfiguration(afile);
    }
 
    public FileConfiguration getArena() {
        return arena;
    }
 
    public void saveArena() {
        try {
            arena.save(afile);
        }
        catch (IOException e) {
            Bukkit.getServer().getLogger().severe(ChatColor.RED + "Could not save arena.yml!");
        }
    }
 
    public void reloadArena() {
        arena = YamlConfiguration.loadConfiguration(afile);
    }
 
    public void setupSign(Plugin p) {
 
        snfile = new File(p.getDataFolder(), "signs.yml");
 
        if (!snfile.exists()) {
            try {
                snfile.createNewFile();
            }
            catch (IOException e) {
                Bukkit.getServer().getLogger().severe(ChatColor.RED + "Could not create spawns.yml!");
            }
        }
        sign = YamlConfiguration.loadConfiguration(snfile);
    }
 
    public FileConfiguration getSign() {
        return sign;
    }
 
    public void saveSign() {
        try {
            sign.save(snfile);
        }
        catch (IOException e) {
            Bukkit.getServer().getLogger().severe(ChatColor.RED + "Could not save spawns.yml!");
            e.printStackTrace();
        }
    }
 
    public void reloadSign() {
        sign = YamlConfiguration.loadConfiguration(snfile);
    }
 
    public void setupData(Plugin p) {
 
        dfile = new File(p.getDataFolder(), "data.yml");
 
        if (!dfile.exists()) {
            try {
                dfile.createNewFile();
            }
            catch (IOException e) {
                Bukkit.getServer().getLogger().severe(ChatColor.RED + "Could not create data.yml!");
            }
        }
        data = YamlConfiguration.loadConfiguration(dfile);
    }
 
    public FileConfiguration getData() {
        return data;
    }
 
    public void saveData() {
        try {
            data.save(dfile);
        }
        catch (IOException e) {
            Bukkit.getServer().getLogger().severe(ChatColor.RED + "Could not save data.yml!");
            e.printStackTrace();
        }
    }
 
    public void reloadData() {
        data = YamlConfiguration.loadConfiguration(dfile);
    }
}

Arena.yml

Code:java

Test:
  Max-Players: 10
  Auto-Start: 1
Arenas:
- Test
 

Spawn.yml

Code:java

Spawns:
  Test:
    Lobby:
      World: world
      X: 0
      Y: 65
      Z: 0
      Pitch: 8.999989
      Yaw: -179.09966
    GameSpawn:
      World: world
      X: 0
      Y: 65
      Z: 0
      Pitch: 8.999989
      Yaw: -179.09966
    SpectatorSpawn:
      World: world
      X: 56
      Y: 70
      Z: -3
      Pitch: -0.90012527
      Yaw: -89.54999

 

HelGod Whats the error?

Tag me if you need me!

 

There is no error at all it just doesn't delete those. Awesomeman2

 

HelGod Whats it supposed to do?

Tag me if you need me.