Unintuitive transformer behavior PSA

[dcartlidge]

I think it's a known "issue" with transformers and how they're triggered - it's slightly different to a JS Query
This thread may help

Uuid.v4() in loop always return the same value

I have a transformer that do something like this: const windowList = []; for (let i = 0; i < 10; i++) { const window = { windowId: {{ uuid.v4(i) }} } windowList.push(window) } return windowList I am expecting a list of window object with different windowId, but the result is a list of the same id. How do I run uuid.v4() in for loop and get different result for each?