Changing member id of skyblock-config member

Hello, I have a function where an owner sets a region and it gets saved in a config file. He can add members to this region, the maximum are 4.
Following, I have an example of a config with 2 members:

Config (open) Config (close)

Code:

bot1:
  owner: 05f673da-66b5-37e3-b03b-09bbf434403e
  x1: -48969
  x2: -49029
  z1: -49975
  z2: -50015
  memberamount: 2
  member:
    '1':
      name: bot2
      uuid: 5de77789-baf9-30ea-9aaa-90555cd97647
    '2':
      name: bot3
      uuid: 899ccf99-e41a-3b48-b478-79fb5a961430

At the very top, bot1 is the name of the region and its owner.
But now to my question. If I delete member '1' with the name bot2, it works well and only bot3 with id '2' is left. Even memberamount is set to 1. The problem is, that bot3 still has the id '2' and I dont know how to fix it to '1', because it's now the first member in this config.
It looks like this:

Config (open) Config (close)

Code:

bot1:
  owner: 05f673da-66b5-37e3-b03b-09bbf434403e
  x1: -48969
  x2: -49029
  z1: -49975
  z2: -50015
  memberamount: 1
  member:
    '2':
      name: bot3
      uuid: 899ccf99-e41a-3b48-b478-79fb5a961430

I thought of changing the number sections directly to the name and the uuid:

Config (open) Config (close)

Code:

bot1:
  owner: 05f673da-66b5-37e3-b03b-09bbf434403e
  x1: -48969
  x2: -49029
  z1: -49975
  z2: -50015
  memberamount: 1
  member:
      name: bot3
      uuid: 899ccf99-e41a-3b48-b478-79fb5a961430

But I had the problem that this name and uuid got overwritten if a new member has been added to the config, so I guess numbering is the solution here.

Finally, the basic code to create these config entries:

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Code:

    public static File f = new File("plugins/Regions", "regions.yml");
    public static FileConfiguration cfg = YamlConfiguration.loadConfiguration(f);

    //Creates a region in the config with the owners name as regionName without members
    public static void setRegion(String regionName, UUID owner, int x1, int x2, int z1, int z2) {
        cfg.set(regionName + ".owner", owner.toString());
        cfg.set(regionName + ".x1", x1);
        cfg.set(regionName + ".x2", x2);
        cfg.set(regionName + ".z1", z1);
        cfg.set(regionName + ".z2", z2);
        cfg.set(regionName + ".memberamount", 0);
        saveCfg();
    }
    //Adds specific member to a region
    public static void addMember(String regionName, Player member) {
        cfg.set(regionName + ".memberamount", getMembersAmount(regionName) + 1);
        cfg.set(regionName + ".member" + "." + getMembersAmount(regionName) + ".name", member.getName());
        cfg.set(regionName + ".member" + "." + getMembersAmount(regionName) + ".uuid", member.getUniqueId().toString());
        saveCfg();
    }

    public static Integer getMembersAmount(String regionName) {
        Integer amount = cfg.getInt(regionName + ".memberamount");
        return amount;
    }

    public static String getMember(String regionName) {
        for (String name : cfg.getConfigurationSection(regionName).getKeys(false)) {
            String memberString = cfg.getString(name + ".member");
            return memberString;
        }
        return null;
    }
    //Removes a specific member from its region
    public static void removeMember(String regionName, Player member) {
        if (getMembersAmount(regionName) > 0) {
            // for (String name : cfg.getConfigurationSection(regionName +
            // ".member").getKeys(false)) {

            cfg.set(regionName + ".memberamount", getMembersAmount(regionName) - 1);
            cfg.set(regionName + ".member" + "." + getMembersAmount(regionName), null);
            cfg.set(regionName + ".member" + "." + getMembersAmount(regionName), null);
            saveCfg();
    
        } else {
           //TODO
        }
        // }
        return;
    }

    public static UUID getMemberUUID(String regionName) {
        // for (String name : cfg.getConfigurationSection(regionName).getKeys(false)) {
        String memberUUIDString = cfg.getString(regionName + ".member" + "." + getMembersAmount(regionName) + ".uuid");
        return UUID.fromString(memberUUIDString);
      //}
        // return null;
    }

I'd be happy, if someone can help me how to set the members id correctly.

EDIT: I don't know if storing the name in general makes sense, because the config wouldn't be updated if the owner/member changes his name; I could get his UUID but I would need to update the config too.

 

Code:

List<ConfigurationSection> list = new ArrayList<ConfigurationSection>();
for (String s : cfg.getConfigurationSection(owner + ".member").getKeys(false)) {
    list.add(cfg.getConfigurationSection(owner + ".member." + s));
}
for (Integer i = 0; i < list.size(); i++;) {
    cfg.set(owner + ".member." + i.toString(), list.get(i));
}
cfg.save(f);

This thing will sort your members automatically and put it from 0 to the end.

 

Thank you very much, but now I use only the uuid and the name instead of ids, thank you anyway.