How fix drop item from boss

-- variables (Made By Er_1x / ERIC#2073)
local hum = script.Parent -- humanoid
local tfolder = game:GetService("ReplicatedStorage"):FindFirstChild("Items") -- finds the folder
local folderc = tfolder:GetChildren() -- gets the items on the folder

local IsModel = false -- check for model if its not a model leave it to false else set it to true
local IsRandom = true -- if set to false add a tool name to get the specific iten you want
local IsTool = true -- checks if its a tool or not IF IT IS A TOOL set it to true if not then flase
local ItemName = "" -- if israndom is set to true leave it blank

-- script part
hum.Died:Connect(function() -- function
	if IsRandom == true then
		if IsTool == false then
			local random = math.random(1, #folderc) -- randomizes
			local index = folderc[random] -- index the tool

			local item = index:Clone() -- clone the randomized tool
			item.Parent = game:GetService("Workspace") -- parent of the tool

			if IsModel == true then -- if it is a model or not dont change, only change the one on the variables
				item:MoveTo(hum.Parent.Head.Position) -- how we can move it because its a model
			else
				item.CFrame = hum.Parent.Head.CFrame -- cframe ( position of the tool)
			end

			print("Random Item Dropped: "..index.Name) -- notify
		else
			local random = math.random(1, #folderc) -- randomizes
			local index = folderc[random] -- index the item

			local tool = index:Clone() -- clone the randomized item
			tool.Parent = game:GetService("Workspace") -- parent of the item
			tool.Handle.CFrame = hum.Parent.Head.CFrame -- cframe ( position of the item)

			print("Random Tool Dropped: "..index.Name) -- notify
		end
	else -- if random is not in true
		if IsTool == false then
			local item = tfolder:FindFirstChild(ItemName):Clone() -- gets the tool ( finds the tool inside the folder
			item.Parent = game:GetService("Workspace") -- parent of the tool

			if IsModel == true then -- if it is a model or not dont change, only change the one on the variables
				item:MoveTo(hum.Parent.Head.Position) -- how we can move it because its a model
			else
				item.CFrame = hum.Parent.Head.CFrame -- cframe ( position of the tool)
			end

			print("Item Dropped: "..ItemName) -- notify
		else
			local tool = tfolder:FindFirstChild(ItemName):Clone() -- gets the tool ( finds the tool inside the folder
			tool.Parent = game:GetService("Workspace") -- parent of the tool
			tool.Handle.CFrame = hum.Parent.Head.CFrame -- cframe ( position of the tool)

			print("Tool Dropped: "..ItemName) -- notify
		end
	end
end) -- end of function

i want do if player get the item before he didnt get it again

Then remove it from a local folder so that it won’t be chosen again.