Question about undefined lists - BUKKIT CONFIG

How would I go about creating an undefined (IE not a set amount of items) list. I am used to the old config. Thanks alot

EG

Values:
- 64-64-64
- 34-34-34
and so on, without a set amount of objects

 

Code:java

 
      public FileConfiguration config;
 
    public void loadConfiguration(){
        if(exists() == false){
            config = getConfig();
            config.options().copyDefaults(false);   
            String path1 = "DrugIds.353.Effect";
            String path2 = "DrugIds.351.Effect";
            String path3 = "DrugIds.40.Effect";
 
            config.addDefault(path1, 9);
            config.addDefault(path2, 9);
            config.addDefault(path3, 9);
            config.options().copyDefaults(true);
            saveConfig();
        }
    }
 
    private boolean exists() {    
            try{
            File file = new File("plugins/DrugMeUp/config.yml"); 
            if (file.exists()) { 
                return true;
            }else{
                return false;
            }
 
            }catch (Exception e){
              System.err.println("Error: " + e.getMessage());
              return true;
            }
    }
 

which generates:

Code:

DrugIds:
  '353':
    Effect: 9
  '351':
    Effect: 9
  '40':
    Effect: 9

then to read it:

Code:java

 
    public int getEffect(int id){
        config = getConfig();
        int amnt = config.getInt("DrugIds." + id + "." + "Effect"); 
        return amnt;
    }
 

thats the current config setup for DrugMeUp, with a bit of modifying it should work for you lemme know if u got any questions