Delay action - in miliseconds

I now have this:

Code:

    public void onPlayerChat(PlayerChatEvent event){
        if(event.getMessage().equals(plugin.getConfig_message())){
            event.getPlayer().sendMessage(ChatColor.RED + plugin.getConfig_respond() + "(message kwam overeen)");
        }else{
            event.getPlayer().sendMessage(ChatColor.RED + "Message: " + event.getMessage() + " Response: " + plugin.getConfig_respond());
        }
    }

And it is working perfectly, but in the chat,it looks like the response message is sent to the player before the player sent hes message. I have a setting in my config file to have a delay, so, how can I delay this, and how can it be in milliseconds in my config ?

 

http://wiki.bukkit.org/Scheduler_Programming (What you need is a delayed task)
Time is measured in ticks, which are 50 millis each, but being more precise doesn't change anything.

 

Could you give me a example for the code above ? I tried to implement the code of that wiki page already, but it didn't work. I'm new at plugin developing .

 

Code:java

plugin.getServer().getScheduler().scheduleSyncRepeatingTask(plugin, new Runnable()
        {
          public void run() {
              //What you want to do
          }
        }, 0, 20)

For a task that repeats every second.