Thanks Eric! That is exactly what I tried to do, but couldn't get emitter 7-12 to flash when I set Secondary in the Msc400 (for example Primary is 01, secondary is 02) and creating two RF recievers in the MX3000 (1 and 2). I set some components to RF on Receiver 2, and the emitters on 7-12 won't flash, which seems to jive with the comment in the msc editor and the firmware warning.

Oh well...smart macros it is for those devices. Thanks for the info on the firmware!

I will give it another try, just in case i mucked it up the 1st time.