Why isn't this working, it says the scales(Like body height scale) is not there?

function Playersize(player)
    local Sv = 5
    local humanoid = player.Character.Humanoid
        humanoid.BodyHeightScale = Sv
        humanoid.BodyWidthScale = Sv
        humanoid.BodyDepthScale = Sv
        humanoid.HeadScale = Sv
end
local player = game.Players.LocalPlayer 

game.ReplicatedStorage.Events.Transformation.OnServerEvent:Connect(function(player)
    Playersize(game.Players.Brockanthony10)
end)