calling function error

[lucaspou]

i have a money txt database and i want my hud to display the money amount but i cant get it to work

this is the funtion in my database.lua

function ply:getmoney()
  return  self:databaseGetValue( "money" )
end

that works fine when i print it like this in init.lua

function chatCommand( ply, text, public )
    if (string.sub(text, 1, 6) == "/money") 
        ply:ChatPrint("Your cash is: " .. ply:getmoney())
         return(false) 
    end
end
hook.Add( "PlayerSay", "chatCommand", chatCommand );

and i did include and AddCSLuaFile the cl_hud.lua

but when i try to make my hud display money amount it says "attempted to index local 'ply' a nil value

local ply = FindMetaTable("Player")
  
  
function hidehud(name)
     for k, v in pairs{"CHudHealth", "CHudBattery"} do
	      if name == v then return false end
		end
end
hook.Add("HUDShouldDraw", "hidehud", hidehud)



  
function hud( ply ) 
local health = LocalPlayer():Health()
local money = ply:getmoney()
draw.RoundedBox(0, 5, ScrH() - 15 - 20, health, 15, Color(255,0,0,255))
draw.SimpleText(health, "default", 10, ScrH() - 15 - 40, Color(255,255,255,255))
draw.SimpleText(money, "default", 10, 20, Color(255,255,255,255))
end 
hook.Add("HUDPaint", "MyHudName", hud) 

not sure what i have done wrong

ps im just starting to learn lua hope you guys or girls can help

[Greetings]

You really should name that variable to something better to avoid later confusion, but ply doesn't refer to a player object in the HUDPaint hook, just change ply:getmoney() to LocalPlayer():getmoney(), and remove the function arguments from the hook, assuming database.lua is shared.