The player doesn't die?

local Peeps = ("DeveloperAtWork")


local FRIEND = Instance.new("Part")
FRIEND.Parent = game.Workspace[Peeps]
FRIEND.Anchored = true 
FRIEND.CanCollide = false
local Fig = Instance.new("SpecialMesh", FRIEND)
Fig.MeshType = "FileMesh"
Fig.MeshId = "http://www.roblox.com/asset/?id=132920664"
Fig.TextureId = "http://www.roblox.com/asset/?id=132920685"
Fig.Scale = Vector3.new(3,3,3)

FRIEND_CFRAME = game.Workspace[Peeps].Head  --Its Position 
while true do
	wait()
	FRIEND.CFrame = FRIEND_CFRAME.CFrame+Vector3.new(2.3,2.3,0)
end



function isPlayerAdmin(name)
   for i,v in pairs(Peeps) do
      if string.lower(name) == string.lower(v) then
         return true
      end
   end
end 
function chatted(msg,rec)
   if (string.sub(msg,1,5):lower()) == "kill/" then
      local player = game.Players:FindFirstChild(string.sub(msg,6))
      if player then
         if player.Character then
            Player.Character.Humanoid.Health = 0
         end
      end
   end
end

idk how to fix it ;/

You never launch the chatted function in this script

I'm going to add one point to the above answers. I would see the easiest & most efficient way of developing the commands to be String Patterns. If you would like to look up string patterns; I have a couple of links here: ROBLOX Wiki LuaLearners ROBLOX Forum I added the ROBLOX forum one as that was the one that helped me most, my friend gave me that when I was a beginner and that's how I learned the background of string patterns. The LuaLearners tutorial is pretty detailed and the ROBLOX wiki is a good way to figure out what some specific patterns mean. I hope this helped you and anyone else aiming to get experience with commands.