I'm trying to make this when zombie gets kill it adds 8 heads to the leaderboard but its not working!!! please help

local Humanoid = script.Parent.Zombie -- Or Zombie Or Whatever 
function PwntX_X() 
local tag = Humanoid:findFirstChild("creator") 
    if tag ~= nil then 
        if tag.Value ~= nil then 
local Leaderstats = tag.Value:findFirstChild("leaderstats") 
            if Leaderstats ~= nil then 
Leaderstats.Heads.Value = Leaderstats.Heads.Value + 8
wait(0.1)
script:remove()
            end 
        end 
    end 
end 
Humanoid.Died:connect(PwntX_X)
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