How can i make this Filtering Enabled with Remote Functions im Confused?

--Local Script
game:GetService("UserInputService").InputBegan:Connect(function(input, playar)
    if input.KeyCode == Enum.KeyCode.L then
        part = Instance.new("Part",workspace)
        part.Name = "Fireball"
        part.BrickColor = BrickColor.new("White")
        part.Transparency = 0.5
        player = game.Players.LocalPlayer
        character = player.Character
        Hum = character.Humanoid
        part.CFrame = character.UpperTorso.CFrame*CFrame.new(1,1,1)
        bv = Instance.new("BodyVelocity",part)
        bv.MaxForce = Vector3.new(1,1,1)
        bv.Velocity = Vector3.new(1,1,1)
        bv.P = Vector3.new(1,1,1)
        part.Shape = "Ball"
        part.Size = Vector3.new(1,1,1)
        part.CanCollide = false
        part.Material = "SmoothPlastic"
        if part.Touched then
            Hum:TakeDamage(69)


        end



    end <---- End is underlined in red for some reason idk how to fix
end)

REM = game.ReplicatedStorage:WaitForChild("RemoteEvent")
REM:FireServer(part)

---Server Script
game.ReplicatedStorage.RemoteEvent.OnServerEvent:Connect(function(playar,partspawn)

        part = Instance.new("Part",workspace)

        part.Name = "Fireball"

        part.BrickColor = BrickColor.new("White")

        part.Transparency = 0.5

        player = game.Players.LocalPlayer

        character = player.Character

        Hum = character.Humanoid

        part.CFrame = character.UpperTorso.CFrame*CFrame.new(1,1,-5)

        bv = Instance.new("BodyVelocity",part)

        bv.MaxForce = Vector3.new(1,1,1)

        bv.Velocity = Vector3.new(1,1,1)

        bv.P = Vector3.new(1,1,1)

        part.Shape = "Ball"

        part.Size = Vector3.new(1,1,1)

        part.CanCollide = false

        part.Material = "SmoothPlastic"


        end



    end
end)