How do you open the gate in Olympic village in asterix at the Olympic games

#1. First you have to beat the first 3 olympic games. (You can access these games by going to the Greek Official (He is near the first save station).)
#2. Once you beat an olympic game, a ray of light will be beamed to one of the 3 mirrors that are located around the olympic village.
#3. You have to find the mirrors and change their direction until the ray of light is pointing directly at one of the Torches, this will light the torch!
#4. Once all 3 of the torches are lighted the door will open!