I'm trying to use environment variables in my

prefect.yaml

and I'm getting an error. Here's the snippet

deployments:
# Production deployments deploy with '*-prod'
- name: create-picks-prod
  version: {{ $NEW_VERSION }}
  tags: [production]
  description: 'Creates the weekly picks page'
  schedule:
    cron: 0 6 * * 3
    timezone: US/Pacific
  entrypoint: create_picks.py:create_picks
  work_pool:
    name: tgfp-jobs
  pull:
  - prefect.deployments.steps.set_working_directory: *path-prod

it needs to be

version: "{{ $NEW_VERSION }}"

Oh, thanks!