How to make a puzzle with moving rocks.

I started this RPG and I am making a dungeon that requires you to move rocks into some positions, almost like a zelda type thing when you move blocks into position. I tried some stuff like using variables

This is what the code looks like for one of the rocks I have to move:

<>Move Event:: This Event
:                      :<>Move Away from Hero
<>Wait: 3 Frames
<>Conditional Branch: Variable [0001: position x] == 6
  <>Conditional Branch: Variable [0002: position y] ==5
      <>Switch: [0011: Rock1] = ON
      <>
   :  Else Handler
      <>Switch: [0011: Rock1] = OFF
      <>
   :  End
   <>
:  Else Handler
   <>Switch: [0011: Rock1] = OFF
   <>
:   End
<>


This goes for each rock, and they have different positions. Now I don't have a problem with the fact that each one has to be in a certian spot in order to make the chest appear. But every time I move them into the right spot the chest doesn't apear. I set it as a parallel process, and I make sure that using the conditional branch option, if all 7 rock switches are on that it activates a switch changing the page to make the chest appear. But for some reason it doesn't happen. I would like it if someone could tell me how to make it so that you can move the rocks on to certian spots but it doesn't matter which rock goes where. Thanks!

If this is for rpg maker 2000 or 203 than all you do is


move event>this event>face away from hero&move away from here>ok>action key>apply>ok

Well I got the part where the rock moves away from me, but I need help with when you move all the rocks to their correct positions it makes a chest appear, but I want to know if I can make it so that if any rock moves on to that location as long as the rocks form what they are supposed to make its ok and it still makes the chest appear. I have been rattling my brain about this for a while!

I have RPG Maker XP

>Creat event>touch by hero
No sprite or object
>move event (000?) to ?,?


best to make a big landscape with rocks as like the walls so people cant access it...put the chest up there so peeps wont see it..so now when they step on the even'it appears whereever u want it to appear