mana bar position not working properly

[frosty galleon]

any suggestions here is my code https://pastebin.com/nX4BBNam#google_vignette

here is a video of what is happening https://streamable.com/u9n3ra

[charred lily]

https://tenor.com/view/ip-grabber-ip-grabber-thanos-gif-21846609

[frosty galleon]

its genuine

heres my code ill copy and paste it for u

local player = game.Players.LocalPlayer

local Character = player.Character

local Humanoid = Character:WaitForChild("Humanoid")

local magicbar = script.Parent

local maxmana = 10

local function updatemana()

local barsize = math.clamp(player.Data.mana.Value / maxmana, 0, 1)
local maxbarsize = script.Parent.Parent.Size

script.Parent.Size = UDim2.new(1, 0, -player.Data.mana.Value/maxmana, 0)
script.Parent.Position = UDim2.new(0, 0, player.Data.mana.Value/maxmana, 0)

end
while wait(.01)do
updatemana()

end