There are many ways
make a sprite on the top left corner
system > every tick | objSprite > set position to > X= lerp (Self.X, 500, dt) Y= lerp (Self.Y, 500, dt)
this makes a transition from the current X and Y position to XY500 and the speed it uses is delta time
I used delta time, because it is framerate independent.
Here is the explanation from the manual
lerp(a, b, x) Linear interpolation of a to b by x. Calculates a + x * (b - a).
for dt (delta time) http://www.scirra.com/tutorials/67/delt ... dependence