Trying to remove Pet Shop Villager trade with Crafttweaker does not work

[DPerez2881]

For context, I am trying to balance the Rats mod to be less combat-oriented for a modpack I am working on with some friends.

I wrote a custom .zs script file for CraftTweaker that should have removed the trade with a level 4 pet shop owner that takes emeralds and gives a rat armor upgrade. The code compiled successfully- no errors, but it did not remove the trade. Even reached out for help with my script, and found that the trade itself is of a custom type, and thus it is not removable with CraftTweaker.

Would love advice for a workaround to this in the meantime, but either way, just wanted to make the issue known.