Click Submit, then check

I'm building a little game where I have 4 spots that can accommodate 4 cubes however those cubes must be placed in a particular sequence in order to complete the level (it's like a PIN number) now this is what I need, let's say that the PIN is: 4 2 1 0. I need a submit button that will check to see if the cubes are in this correct position. How do I write a script to perform this task?

Anticipating thanks