how do you access unleashed mode in sonic unleashed?

how do you access unleashed mode in sonic unleashed?

From this guide:

GameFAQs: Sonic Unleashed (WII) FAQ/Walkthrough by Angnix

Unleashed Mode:
Wii: C button
Classic: Zl or Zr button
Gamecube: Y button
PS2: L1 and R1 at same time
If you have even a little in the Unleashed Meter, you can go into
Unleashed Mode. You do more damage to enemies and you are not damaged as
much yourself. You will come out of Unleashed mode when the gauge goes
down to zero. Fill your gauge with blue orbs.