Dub Looper inside a custom unit - chain behaviour

Hi all,

I was trying yesterday to replicate this Neil’s patch

suddenly I realized that when I put the dub looper inside the custom unit (as Neil does in the video) the buffer wasn’t taking any sound signal, this not happens if I put the dub looper in the main chain, has something changed in chain behaviour from 0.3 to 0.6? Am I doing something wrong?

EDIT: I think I got it, I chose the wrong container, custom effect unit seems to be the way