Ring sequence in the IWHBYD Skull in Halo 3 for rings?

[Black Out]

In the level The Covenant what is the ring order in the game, I went on Cheat CC and got code, we did it but rings didn't flash and no Skull at the end, explain please..

 

[TheRedCure]

Numbering the rings from 1 (nearest the door) to 7(nearest Truth) the shortest code that i know works is: 4 6 5 4 5 3 4
Have fun mate
(if that doesn't work there is a longer one that is 100% guaranteed to work, it is: 4 5 6 5 7 6 5 4 1 2 3 2 7 2 1 3 4 6 7 5 4 6 5 4 5 3 4)