If you are just trying to remap messages 0 to 7 to light up a col using the grid/led/col
you could simply use [select 0 1 2 3 4 5 6 7] and make the respective output trigger 1 2 4 8 16 32 64 128
can’t you ?
(sorry if I’m totally out of the scope. I’m not in front of PD)