I have a question regarding the exclusion of specific algos via the .fac file. I understood, I can put a minus sign in front of the OptimalF column.
I have a specific case where I only want to exclude the Short algo and keep the Long one. I tried:

.fac table

GER30:30 -.695 1.18 120/266
GER30:30:L .816 1.24 61/133
GER30:30:S -.541 1.13 59/133

I also tried without the "-" sign at the top row. But Short trades are still executed. Is the exclusion not possible here? Do I have to exclude via script?