Solved SendReply won't work with CovalencePlugin

I have tried to change my Rust plugin to Universal plugin, so i changed RustPlugin to CovalencePlugin.

My Usings:

Code:

using System;
using System.Text;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;using Oxide.Core;
using Oxide.Core.Libraries.Covalence;

My problem is that The name `SendReply' does not exist in the current context
First i changed all PrintToChat to SendReply, but it isnt work either.

Code:

public void Chat(BasePlayer player, string str)
        {
            SendReply(player, $"{Config["Settings", "Prefix"]} " + str);
        }

 

Thanks, i actually solve problem after i send that

Can i use BasePlayer in Universal plugins?
I need it for all userids etc.