Resize between two points

I want a sprite to scale Up and scale down between two points: Top:(WallUP) and Bottom of Layout: (WallDown)

On Top, the sprite (Car) should be 50%. Middle of the layout it should be 75%. Bottom it should be original size, 100%.

Could you please fix the file and send it back please?

scale = lerp(0.5,1.0,t)

t = unlerp(BottomY, TopY, Car.Y)

Thanks very much, but could you give simpler instructions please. I am new to construct. What events and actions?