[FMX] Control function for MC's

I have 120 MC’s (little squares, names square_01, square_02, etc) around my stage like a frame around a painting. I would like to create an onRollOver/Out effect for these mc’s, but it seems a bit much to me to place them all in an array.

The effect have to be that when you roll over the alpha is going to 0 and that on roll out the alpha will be restored to 100. I also would like the effect to be easing. I know how make a function to control the alpha. But I don’t know how to continiue from there. I think it has something to do with a (for in) loop witch I tried, without any results. Is there somebody who can help me?