Changing scale of a GUI based on an IntValue?

So I'm making a meter that will decrease along with an IntValue stored in the player.

When I try to do it this way:

meter.Size.Y.Scale = height

This odd error comes up:

Scale cannot be assigned to Script 'Players.Player.PlayerGui.existence.bg.meter_bg.meter.destru', Line 13 Stack End

But if I try it this way, the meter will stay completely blank:

meter.Size = UDim2.new({1, 0},{height, 0})

The maximum the value can be is 100, and the minimum is 0. So when I set the value of height, I have it set to the value stored in the player divided by 100, so I don't see why this isn't working.

I would appreciate any help, thanks for reading.