How would i make a bullet pierce/damage multiple enemies?

Hi. So im makinga gun game but theres one simple problem. Bullets themselves WILL pierce through enemies, but the damage doesnt. Can someone help me think how?

local laserFireEvent = game.ReplicatedStorage.Guns.Pistol
local laserFolder = game.Workspace.Bullets
local debris = game:GetService("Debris")

local range = 100

local function CreateBeam(origin, direction)
    local midpoint = origin + direction/2 

    local part = Instance.new("Part")
    part.Parent = laserFolder
    part.Anchored = true 
    part.CanCollide = false 

    part.Material = Enum.Material.Neon
    part.BrickColor = BrickColor.new("New Yeller")
    part.Transparency = 0

    part.CFrame = CFrame.new(midpoint, origin)
    part.Size = Vector3.new(.5, .5, direction.magnitude)

    debris:AddItem(part, 0.25)
end

laserFireEvent.OnServerEvent:Connect(function(player, mousePos, originPos)
    local direction = (mousePos - originPos).Unit * range  

    local result = game.Workspace:Raycast(originPos, direction)

    if result then 
        local character = result.Instance.Parent 
        local humanoid = character:FindFirstChild("Humanoid")
        if humanoid and humanoid ~= player.Character.Humanoid then 
            humanoid:TakeDamage(20)
        end

    end

    CreateBeam(originPos, direction)
end)