Trouble with weapon switching

Help and Feedback Scripting Support
1

I have been attempting to create a weapon switching system, but there have been multiple glitches, for example, you can only switch weapons once. Here is the code.

script.Parent.OnServerEvent:Connect(function(player, effect)
	if effect=="NextItem" then
		print("effenet")
		player.Character:FindFirstChildOfClass("Humanoid"):UnequipTools()
		local numberon=0
		local Children = player.Backpack:GetChildren()

		print(numberon==player.Character.ToolOn.Value)
		if numberon==player.Character.ToolOn.Value then -- false
			numberon+=1
			if Children[numberon]:IsA("Tool") then
				print("Tool = " .. player.Character.ToolOn.Value)
				print("NumberOn = " .. numberon)
				player.Character:FindFirstChildOfClass("Humanoid"):EquipTool(Children[player.Character.ToolOn.Value])
				player.Character.ToolOn.Value=player.Character.ToolOn.Value+1
				if player.Character.ToolOn.Value==(#Children) then
					player.Character.ToolOn.Value=0
					numberon=0
					print("reset sucessful")
				end
			end
		end
	end
end)

The server event is firing, I have checked. I haven’t been able to solve this. Thank You!