Replace help

Hey guys im working on a guild plugin but im having some issues with "replace" it doesnt seem to work in the part this.inCreation.replace(e.getPlayer().getName(),

Code:

  @EventHandler
  public void onTalk2(AsyncPlayerChatEvent e)
  {
    if (this.step1.contains(e.getPlayer().getName()))
    {
      if (e.getMessage().equalsIgnoreCase("N"))
      {
        this.step1.remove(e.getPlayer().getName());
        this.inCreation.remove(e.getPlayer().getName());
        e.getPlayer().sendMessage(this.ch + "Cancelled");
        return;
      }
      e.setCancelled(true);
      if (e.getMessage().length() <= 4)
      {
        this.inCreation.replace(e.getPlayer().getName(),
          new Guild(e.getMessage(), null, null));
        this.step1.remove(e.getPlayer().getName());
        this.step2.add(e.getPlayer().getName());
        e.getPlayer()
          .sendMessage(
          ChatColor.WHITE + "" + ChatColor.BOLD +
          "Type in chat What the Prefix of the guild be EX: VK,123");
      }
      else
      {
        e.getPlayer().sendMessage(
          this.ch + "That name is too long! (Max 4 char).");
      }
    }
  }
  

 

@chunkaymonkay Your sending the player an Object as a String. Get the Guild's name or however you would like to do that. Also replace returns a new String. It doesn't modify the old one.