Need Help With ChatTags for ulx!

[codyjay97]

local ranks = {
    ["owner"] = Color(204,0,204),
    ["superadmin"] = Color(255,0,0),
    ["vip"] = Color(255,255,51),
	["donator"] = Color(0,204,255),
    ["admin"] = Color(9,255,255),
    ["operator"] = Color(238,221,130),
	["vip+"] = Color(221,255,255),
	["developer"] = Color(85,255,255)
}
 
if (SERVER) then
    AddCSLuaFile("chat.lua")
     
    function CustomChat_ChatMessage(ply, msg, rank, r, g, b)
        umsg.Start("CustomChat_ChatMsg")
            umsg.Entity(ply)
            umsg.String(msg)
            umsg.String(rank)
            umsg.Short(r)
            umsg.Short(g)
            umsg.Short(b)
        umsg.End()
    end
 
    function CustomChat_Checker(ply, text, teamonly)
        local group = ply:GetUserGroup()
        local color = ranks[group]
        local txtcheck = string.sub(text,1,1)
        if txtcheck == "/" then
            return text
        else
            return "", CustomChat_ChatMessage(ply, text, "["..string.upper(string.sub(group,1,1))..string.sub(group,2).."]", color.r, color.g, color.b)
        end
    end
    hook.Add("PlayerSay", "WordCheck", CustomChat_Checker)
else
    usermessage.Hook("CustomChat_ChatMsg", function(um)
        local ply = um:ReadEntity()
        local msg = um:ReadString()
        local rank = um:ReadString()
        local r = um:ReadShort()
        local g = um:ReadShort()
        local b = um:ReadShort()
        chat.AddText(Color(r, g, b), rank, team.GetColor(ply:Team()), " "..ply:Nick(), Color(255,255,255), ": "..msg)
    end)    
end

This is what i have but teamchat no longer works for ttt people can see the teamchat someone please help me.