I FOUND THE SOLUTION......:-)

If you want external patterns or arrangement from a drum machines to run synchronized to BIAB you have to make sure that the Start/stop/Midi Time Code is send to the right port/output.

Go to "MIDI"
--> "** CoreMidi (choose ports)..."
--> I selected port 1 which is the one I'm using and pressed "<-- set all ports to this"

and......It worked....!

...and by the way.....you won't believe have great it sounds when a pedal steel is combined with my Roland MC-808 groovebox....I'm happy...:-)

Thanks to everybody who tried to help

Mads A

BIAB since 2010

Catalina (10.15.7) iMac (27", late 2013), 32 GB.

BIAB 2022, installed on internal HD; Logic proX; EZdrummer; Spark; Synfire; Suggester .

Musicians Institute (GIT) 1991;
Conservatory of Southern Denmark 2000.