This script is not working, can anyone locate my problem?

Im trying to make a script where when you get a kill in my game, a message comes up on the screen saying nice kill. The message types out on the screen so it needs to be placed in the gui. But I only want is to be placed in the gui when that player gets a kill, and then I want it removed from the gui after its finished. Heres what I got so far. The name of my gui is called (killmessage) and right now, its located in the Lighting.

1. function handleKillCount(humanoid, player)
2. local killer = getKillerOfHumanoidIfStillInGame(humanoid)
3. if killer ~= nil then

4.  local stats = killer:findFirstChild("leaderstats")
   

5.  if stats ~= nil then
   

6.      local kills = stats:findFirstChild("Kills")
   

7.      if killer ~= player then
   

8.          kills.Value = kills.Value + 1
   

9.          game.Lighting:FindFirstChild(KillMessage):Clone().Parent = player.PlayerGui
   

10.     else
    

11.         kills.Value = kills.Value - 1
    

13.     end
    

I noticed that you put:

if killer ~= player then
-- and
game.Lighting:FindFirstChild(KillMessage):Clone().Parent = player.PlayerGui -- look, to player's player GUI. Why's that?

A little Mistake, I guess.