I was in your shoes about a year ago - it is a lot to learn! and I’m still on here getting my mind blown every day
When getting just a few fields inside a BPM, I would use the Db context to pull it. Something like this in a custom code widget:
…and not directly related, but I’m just going to throw this in here for good measure, because it can save a lot of time banging your head against the wall:
