Script not killing player after they purchase a product like it should?

The script is supposed to kill you when you purchase it. The leaderstats part works and so does the prompt to purchase. But it doesn't kill you.

Script:

local MarketplaceService = game:GetService("MarketplaceService")
local RemoteEvent = game.ReplicatedStorage.PromptSkipStagePurchase
local productId = 1164319291

-- Prompt purchase
RemoteEvent.OnServerEvent:Connect(function(player)
	MarketplaceService:PromptProductPurchase(player, productId)
end)

-- Skip function
MarketplaceService.ProcessReceipt = function(receiptInfo)
	if receiptInfo.ProductId == productId then
		
		local player = game.Players:GetPlayerByUserId(receiptInfo.PlayerId)
		
		player.leaderstats.Stage.Value = player.leaderstats.Stage.Value + 1 -- Make the stage leaderstat go up by 1
		
		player.Character.Humanoid.MaxHealth = 0 -- Kills player so they respawn at next check point
	end
end