the flash is in slave mode. In ETTL-2 everything work fine.
I would like to use the strobostopic mode - MULTY via 7D master.
If I select on the LCD screen the MULTI mode the wireless mode show hidden.
When I use the 580ex2 on top of the camera I can trigger another Speedlites in MULTI mode, but it seems the 7D pop-up does not control another speedlites in MULTI mode(Wireless is hidden) ..