Category relation as value

I’m editing a template. I’m new and I don’t know a lot about Glide. I have been wondering how can I set a category relation as a value. I will put a photo as an example.

The category relation is “projects”, but I will like it to be a column from “Terrazas ID”.
I already have a category relation column in the sheet.

What I’m trying to do is this: show only the “Terrazas” that are on that “perímetro”. But they show on all “perímetros”.

How are you currently setting up the relation?

Create a Lookup column > relation Projects > Column Terrazas ID

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