Hey everyone. I did finally get my reactor to work! Now I have a question that likey has a simple answer: How do I make my reactor remember to react after closing and reopening a drawing? As it stands it works only in the current drawing session, and won't in a new session until I run the command that calls the reactor again. Anybody know the secret? maybe vlr-pers isn't what I'm looking for? I've tried this format: (setq lineReactor (vlr-pers (vlr-object-reactor (list en1 en2 en3) "Detail Cut" '((:vlr-modified . adjustDB))))) and this format: (setq lineReactor (vlr-object-reactor (list en1 en2 en3) "Detail Cut" '((:vlr-modified . adjustDB)))) (vlr-pers lineReactor) Thanks for the help! kemp