Is the ToP function deprecated?

So I was busy making a Raycast weapon, when I found that it was saying that ToP was a nil value. Has ToP been deprecated? I looked back at some RayCast videos from Feb 2019 and ToP was an official function. Here's the code:

local FireEvent = script.Parent.FireEvent
local Dmg = math.random(15, 20)
FireEvent.OnServerEvent:Connect(function(Player, FromP, ToP)
    local RayCast = Ray.new(FromP, (ToP-FromP).unit*100)
    local Part = game.Workspace:FindPartOnRay(RayCast, Player.Character, false, true)
    if Part then
        local Hum = Part.Parent:FindFirstChild("Humanoid")
        if Hum then
            Hum:TakeDamage(Dmg)
        end
    end
end)

Any ideas? (I did look in object browser and found no results )