How can I stop this simple script from breaking?

repstorage.RoundTag.Changed:connect(function(value)
	if value == true then
		if repstorage.GameRound.Value == "Deathmatch" then
			for _, player in pairs(game.Players:GetPlayers()) do
				player.Character:WaitForChild("Humanoid").Died:connect(function()
					if player.Character.Humanoid:FindFirstChild("creator") then
						local tag = player.Character.Humanoid.creator
					    local tColor = player.TeamColor
					    local kColor = tag.Value.TeamColor
					    if not kColor then return end
					    if not tColor then return end
					    if tColor ~= kColor then
						    if kColor == BrickColor.new("Lime green") then
						    	greenscore.Value = greenscore.Value + 1
						    elseif kColor == BrickColor.new("New Yeller") then
						    	yellowscore.Value = yellowscore.Value + 1
						    end
						end
					end
				end)
			end
		end
	end
end)

I have this script which checks if the round value changes then it sets off. So the game is 5 minutes long, and when a person dies it gives the team + 1 point. The problem is that it gives you a point but if you kill someone again then you dont get the points. How come this dosent work? There is no outpout errors