The Logic Off Topic list

hi
i got problem!!
i use macg4/logic5.0/amt8/
the problem:
i want to select the device i want to get controled by the mac16/3 
(stepsquenser)
i trying to do that by using a channel splitter and cabeling the out 
from the mac16 and the hold down option until i get the popup 
meny and the selecting the device i want to be controled...and 
then route the sumport from the psychial input to the 
channelsplitter and from the sumport of the channelsplitter to 
seq/thru...that would be working!!!! but it dosent..the mac16 
control still end up out on the tracks that i marking in the 
arrenge(like my master keybord)...im getting crazy over this..i 
now that thisshould be working!!
help!!
peter