How do i make Remote Functions Arguments work??

the error is 'BackgroundTransparency is not a valid member of Player 22:56:19.535 - Stack Begin'

local oo= Instance.new("RemoteEvent")
oo.Name = "CharChangeEvent"
oo.Parent = game.ReplicatedStorage.RemoteEvents.Gui
oo.OnServerEvent:connect(function(Player, X)
    X.BackgroundTransparency = 0
    X.Side.BackgroundTransparency = 0
    Player.PlayerGui.Gui.Create.FaceFrame.Visible = false
    Player.PlayerGui.Gui.Create.GenderFrame.Visible = false
    Player.PlayerGui.Gui.Create.MarkFrame.Visible = false
    Player.PlayerGui.Gui.Create.HairFrame.Visible = false
    local function CharacterValues()
    local NewC = Player.Gamestuff.Characters.NewCharacter
    local Character = Player.Character
    local BodyColors = Character:findFirstChild("Body Colors")
    local BColorVal = NewC.BColors.Value
    local HairColorVal = NewC.HairColor.Value
    local HairMesh = NewC.HairId.Value
    --HairColor.BrickColor = HairColorVal
    BodyColors.HeadColor = BColorVal
    BodyColors.LeftArmColor = BColorVal
    BodyColors.LeftLegColor = BColorVal
    BodyColors.RightArmColor = BColorVal
    BodyColors.RightLegColor = BColorVal
    BodyColors.TorsoColor = BColorVal
    Character.Head.face.Texture = NewC.Face.Value
    if Player.Character:findFirstChild("Hat") then
        Player.Character.Hat:destroy()
        end
        debounce = false
        h = Instance.new("Hat")
        p = Instance.new("Part")
        h.Name = "Hat"
        p.Parent = h
        p.Position = Player.Character:findFirstChild("Head").Position
        p.Name = "Handle" 
        p.formFactor = 0
        p.Size = Vector3.new(1,2,2) 
        p.BottomSurface = 0 
        p.TopSurface = 0 
        p.Locked = true 
        Mesh = Instance.new("SpecialMesh",p)
        h.Parent = Player.Character
        if HairMesh == "Bald" then
            Player.Character.Hat:destroy()
        end
        if HairMesh == "Equinox" then
        Mesh.MeshId = "http://www.roblox.com/asset/?id=19326912"
        p.BrickColor = Player.Gamestuff.Characters.NewCharacter.HairColor.Value
        h.AttachmentForward = Vector3.new(-0, -0, -1)
        h.AttachmentPos = Vector3.new(0, -0.14, -0.07)
        h.AttachmentRight = Vector3.new(1, 0, 0)
        h.AttachmentUp = Vector3.new(0, 1, 0)
        elseif HairMesh == "GirlAnimeHair" then
        Mesh.MeshId = "http://www.roblox.com/asset/?id=164382853"
        p.BrickColor = Player.Gamestuff.Characters.NewCharacter.HairColor.Value
        h.AttachmentForward = Vector3.new(0, 0, 1)
        h.AttachmentPos = Vector3.new(0.0500000007, 1, -0.0500000007)
        h.AttachmentRight = Vector3.new(1, 0, 0)
        h.AttachmentUp = Vector3.new(0, 1, 0)
        end
    end
end)

Called

FaceButt.MouseEnter:connect(function()
    game.ReplicatedStorage.RemoteEvents.Gui.CharChangeEvent:FireServer(Player,FaceButt)
end)

It says the property isnt in player but Its supposed to be in The button?