So: "Get any black object to the flag" is a little mysterious, because I can put the vertical blocks (or on the level with the bee, the black ball) directly above the flag, hit play, and watch them fall down to the flag, but not win. There must be some more particular condition that I need to satisfy (and I did figure out roughly what that was on the first real level, at least), and I think that needs to be clearer; or you might want to put a "no putting things here" zone in the space above the flags.