wait, you are trying to make it so when the player moves onto a bed, he lies down immediately raither than "walking" onto the bed ans then changing graphic?
hmm...sounds to me like you should just change the event a bit, and make it so the player actually pauses, then jumps into bed and goes into a sleeping position. what im saying is, is that sounds like one of those things that is really hard to imitate on a tile-based game.