Metz 48AF in wireless mode

Hello to everyone, of course I need help, I am trying to use the metz as a wireless but the strange stuff is even fallowing the instruction i don`t see appearing the option SL on the flash, i can`t understand what I am doing wrong, even with the camera or the flash, I even read it in Italian but it didn`t work lol.

thanks
claudio

This flash is extremely confusing. On the back there are (2) buttons-one is a minus-the other a plus.
Press both at the same time to navigate to the desired setting. Make sure your wireless channels are identical. I use the camera flash to trigger the Metz which is mounted on a bracket-works fine.