Why is it not freezing the player or thawing as well as banning?

I can kill players but I can't ice,thaw or ban them? No errors No nothing just does not work

Admins = {"johndeer2233", "doodmen123", "Player", "Player1"}
Banned = {}
prefix = "/"
function kill(target)
	if game.Players:FindFirstChild(target) then
		if game.Players:FindFirstChild(target).Character.Humanoid then
			game.Players:FindFirstChild(target).Character.Humanoid.Health = 0 
		end
	end
end

function ice(target)
	if game.Players:FindFirstChild(target) then
		if game.Players:FindFirstChild(target).Character.Torso then
			game.Players:FindFirstChild(target).Character.Torso.Anchored = true
		elseif game.Players:FindFirstChild(target).Character.LowerTorso then
			game.Players:FindFirstChild(target).Character.LowerTorso.Anchored = true
		end
	end
end

function thaw(target)
	if game.Players:FindFirstChild(target) then
		if game.Players:FindFirstChild(target).Character.Torso then
			game.Players:FindFirstChild(target).Character.Torso.Anchored = false
		elseif game.Players:FindFirstChild(target).Character.LowerTorso then
			game.Players:FindFirstChild(target).Character.LowerTorso.Anchored = false
		end
	end
end

function ban(target)
	if game.Players:FindFirstChild(target) then
		game.Players:FindFirstChild(target):Kick()
		table.insert(Banned,target)
	end
end
game.Players.PlayerAdded:connect(function(plr)
	for i,v in pairs(Banned) do
		if v == plr.Name then
			game.Players:FindFirstChild(v):Kick()
		end
	end
	plr.Chatted:connect(function(msg)
		for i, v in pairs(Admins) do
			if plr.Name == v then
				if msg:sub(1,5):lower() == prefix.."kill" then
					kill(msg:sub(6))
				end
				if msg:sub(1,5):lower() == prefix.."ice" then
					ice(msg:sub(6))
				end
				if msg:sub(1,5):lower() == prefix.."thaw" then
					thaw(msg:sub(6))
				end
				if msg:sub(1,5):lower() == prefix.."ban" then
					ban(msg:sub(6))
				end
			end
		end
	end)
end)