I can't Unequip tools, I'm sure I did it correct, any help?

Hi. Question for this Hotbar. In line 119 and 100, it doesn't unequip the tools.

I tried searching on the internet for the method to unequip and it is exactly the same with no errors whatsoever.

Everything works fine such as equipping tools, the Hotbar UI, the uis part, and the events.

game.StarterGui:SetCoreGuiEnabled(Enum.CoreGuiType.Backpack,false)

-- Tables and vars
local num = {
	
	'1',
	'2',
	'3',
	'4',
	'5',
	'6',
	'7',
	'8',
	'9',
}

local numinwords = {

	'One',
	'Two',
	'Three',
	'Four',
	'Five',
	'Six',
	'Seven',
	'Eight',
	'Nine',
}

local tools = {
	[1] = 'None' ,
	[2] = 'None' ,
	[3] ='None',
	[4] = 'None' ,
	[5] = 'None' ,
	[6] = 'None',
	[7] = 'None' ,
	[8] = 'None' ,
	[9] = 'None' ,
	
}

local uis = game:GetService('UserInputService')

local plr = game.Players.LocalPlayer

local backpack = game.Players.LocalPlayer:WaitForChild('Backpack')

local frame = script.Parent

repeat wait() until plr.Character

local char = plr.Character

wait(1)
for i, v in pairs(backpack:GetChildren()) do
	tools[i] = v
	frame[i].Image =  'rbxassetid://'..v.ID.Value

end
--Events
backpack.ChildAdded:Connect(function(tool)
	for i, v in pairs(tools) do
		
		if v == 'None' then
			frame[i].Image =  'rbxassetid://'..tool:WaitForChild('ID').Value
			tools[i] = tool
			break
		end
	end

	print(tools)
	
end)
backpack.ChildRemoved:Connect(function(tool)
	for i, v in pairs(tools) do
		if v == tool then
			if char:FindFirstChild(tool) then
			else
				tools[i] = 'None'
				frame[i].Image = ''
			end
			break
		end
	end

	print(tools)
end)


for i, v in pairs(frame:GetChildren()) do
	if v:IsA('ImageButton') then
		uis.InputBegan:Connect(function(input)
			local n = tonumber(v.Name)
			if input.KeyCode == Enum.KeyCode[numinwords[n]] then

				if tools[tonumber(v.Name)] ~= 'None' then
					
					char.Humanoid:UnequipTools()
					if char:FindFirstChild(tools[tonumber(v.Name)].Name) then
						char.Humanoid:UnequipTools()

					else
						
						char.Humanoid:EquipTool(tools[tonumber(v.Name)])
					end
				end
			end
			
		end)
	end
end


for i, v in pairs(frame:GetChildren()) do
	if v:IsA('ImageButton') then
		v.MouseButton1Click:Connect(function()
			if tools[tonumber(v.Name)] ~= 'None' then
				char.Humanoid:UnequipTools()
				if char:FindFirstChild(tools[tonumber(v.Name)].Name) then
					char.Humanoid:UnequipTools()

				else
					
					char.Humanoid:EquipTool(tools[tonumber(v.Name)])
				end
			end
			

		end)
	end
end