foo_random_pools
Reply #83 –
Group: %libary%
Number of groups to add 0
You're telling it to search ALL tracks (Group: %libary%) BUT not add any (Number of groups to add 0).
This needs to be at least 1 in general and in your case:
Number of groups to add 1
And for tidyness sake you could change %libary% to %library% (but this makes no difference, as you've realised if you make up a %field% that doesn't exist it will search all tracks).
C.