Help with fire trail that follows the mouse

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1

I got this local script from an old post. I need a fire trail ability for my game and now I have this local script, I just need a server script that will make it work.

I have no idea how to do this, because i’ve never made holdable keybinds or anything like that. Thank you for any help. Here’s the local script:

local replicatedStorage = game:GetService("ReplicatedStorage")
local userInputService = game:GetService("UserInputService")
local runService = game:GetService("RunService")

local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()

local fire = replicatedStorage.FireTrailSpell

local connection

local camera = workspace.CurrentCamera
local range = 30
local RayParams = RaycastParams.new()
RayParams.FilterType = Enum.RaycastFilterType.Whitelist
RayParams.FilterDescendantsInstances = {workspace.Baseplate,workspace.Ground} --insert the parts that you want the fire to appear on in here (these are just examples)

--	if player:GetRankInGroup(11133567) == 255 or player:GetRankInGroup(11133567) == 205 then

local function getWorldMousePos()
	local mousePos = userInputService:GetMouseLocation()
	local ray = camera:ViewportPointToRay(mousePos.X,mousePos.Y)
	local direction = ray.Direction * range
	local result = workspace:Raycast(ray.Origin, direction, RayParams)
	if result then
		return result.Position
	else
		return nil --return nothing because it isn't touching ground
	end
end

userInputService.InputBegan:Connect(function(input, processed)
	if processed then
		return
	end

	if input.KeyCode == Enum.KeyCode.X then

		if player:GetRankInGroup(11133567) == 205 or player:GetRankInGroup(11133567) == 255 then

			fire:FireServer("On")

			local BodyGyro

			fire.OnClientEvent:Connect(function()
				BodyGyro = Instance.new("BodyGyro")
				BodyGyro.MaxTorque = Vector3.new(300, 300, 300)
				BodyGyro.P = 10^7
				BodyGyro.D = 100
				BodyGyro.Parent = character:FindFirstChild("HumanoidRootPart")

				connection = runService.RenderStepped:Connect(function()
					runService.RenderStepped:Wait()
					local WrldMousePos = getWorldMousePos()
					if WrldMousePos then
						local Direction = Vector3.new(WrldMousePos.X - character.HumanoidRootPart.Position.X, WrldMousePos.Y, WrldMousePos.Z - character.HumanoidRootPart.Position.Z)
						BodyGyro.CFrame = CFrame.new(character.HumanoidRootPart.Position, character.HumanoidRootPart.Position + Direction)
						local Trail = workspace:FindFirstChild(player.Name.."'s Trail")
						table.insert(RayParams.FilterDescendantsInstances,Trail)
						if Trail then
							local range = math.min(30, (character.HumanoidRootPart.Position - WrldMousePos).Magnitude)
							local direction = (WrldMousePos - character.HumanoidRootPart.Position).Unit
							Trail.CFrame = CFrame.new(character.HumanoidRootPart.Position + direction * range)
						end
					end
				end)
			end)

			wait(20)

			BodyGyro:Destroy()
			connection:Disconnect()
			fire:FireServer("Off")

		end
	end
end)