I have a 1920x1080 grid with 8 columns and 4 rows, where each spot is 240x270 px. I have several animation comps of the same size, which I want to dispay randomly within the grid. I've almost managed to do it, using the expression below. But I am still struggling to prevent my cops from landing in the middle of the spots, or beyond the comp's boundaries. What am I missing? Thanks in advance!