Wadia 581i Selection of CD or SACD

I have recently purchased a Wadia 581i player. The player is working fine with CD and SACD but I am not able to toggle between the CD and SACD layers of hybrid discs. The manual supplied along with the player do not mention anything about this. The inline manual at Wadia website says the MODE button on remote is for selecting CD/SACD. In my case the MODE button has no effect at all.

I would like to know other users experience in this regard.

Regards

Anil