I am having some trouble with animating a PSD that was brought in from illustrator. It is a building and I want to animate it like each of the lights of the building are turning on. I made a mask on one of the buildings and I tried to turn the opacity down and the building was not disappearing when I turned the opacity from 0% to 100% with the opacity mask. Each of the buildings only disapear when I turn off each of the layers. I am really confused on how I can approach animating this and what suggestions do you have?
Thanks for the help!