Why me event dosent work with instances?

game:GetService("RunService").RenderStepped:Connect(function()
    if MD and DB then
        DB = false

        script.Shoo:FireServer(weapon.Hit.shoot, weapon.Hit.CFrame.p, Mouse.Hit.p)
    end
end)

this is the local script

local DB = false

script.Parent:WaitForChild("FPS").TakeDamage.OnServerEvent:Connect(function(Plr, Sound, P1, P2)
        Sound:Play()

        local ray = Ray.new(P1, (P2 - P1).unit * 300)
        local part, position = workspace:FindPartOnRay(ray, Plr.Character, false, true)

        local beam = Instance.new("Part", workspace)
        beam.BrickColor = BrickColor.new("Cool yellow")
        beam.FormFactor = "Custom"
        beam.Material = "Neon"
        beam.Transparency = 0.25
        beam.Anchored = true
        beam.Locked = true
        beam.CanCollide = false

        local distance = (P1 - position).magnitude
        beam.Size = Vector3.new(0.05, 0.05, distance)
        beam.CFrame = CFrame.new(P1, position) * CFrame.new(0, 0, -distance / 2)

        if part then
            if part.Parent:FindFirstChild("Humanoid") then
                local mag = (P1 - part.Position).magnitude

                part.Parent:FindFirstChild("Humanoid"):TakeDamage(math.random(16, 20) - (mag / 10))
            elseif part.Parent.Parent:FindFirstChild("Humanoid") then
                local mag = (P1 - part.Position).magnitude

                part.Parent.Parent:FindFirstChild("Humanoid"):TakeDamage(math.random(16, 20) - (mag / 10))
            end
        end

        --[[local Mag = game.ReplicatedStorage.Mag:Clone()
        Mag.Parent = workspace.Mags
        Mag.CFrame = weapon.Body.MagDrop.WorldCFrame

        local Effect = game.ReplicatedStorage.Effect:Clone()
        Effect.Parent = workspace.Mags
        Effect.CFrame = Mouse.Hit]]

        game:GetService("Debris"):AddItem(beam, 0.001)
        wait(.05)
        DB = true

        --[[wait(4)
        Effect:Destroy()
        Mag:Destroy()]]
end)

this is script

i cant use instances like Sound objects and but not cframe and positions and bools numbers etc. thanks