Help! Paramteric Facade!

Hi! I am an Architecture student trying to create a Facade in grasshopper that is basically an Array of random rectangular objects (Wooden Slats) along a wall, However, the part I am finding difficulty with is trying to separate the slats and then increase this separation along the length of the wall like a gradient. I am a Novice with grasshopper which is probably why I’m not using the correct terminology however any help or direction would be greatly appreciated!!!

maybe that helps: