Hello, is it possible to pass the current timestamp into the prefect.yaml file for deployment? In the deployment sessions, we want to add a new deployment for a workflow, and overwrite the parameters with the current timestamp. I'm trying to use

"${sys.now()}"

but it didn't pass into Prefect. In the future. we'd create a schedule for this workflow, and each time it's triggered, the

end_date

parameter should be the timestamp as the current triggered time.

- name: new_workflow
  # version: null
  # tags: []
  # description: null
  schedule: null
  entrypoint: flows/tests/example.py:example
  parameters: {
    "start_date": "2023-03-01T08:00:00.000Z"
    "end_date": "${sys.now()}"
  }
  work_pool: *work_pool

You can set an environment variable using the shell date command and pass that in if that’s feasible ?

Hi @Christopher Boyd is there any way I can pass the prefect variable into that parameter section? My prefect variable is defined as

prefect.variables.current_date

, but when I reference this in the parameter section as below, if failed to load.

- name: new_workflow
  # version: null
  # tags: []
  # description: null
  schedule: null
  entrypoint: flows/tests/example.py:example
  parameters: {
    "start_date": "2023-03-01T08:00:00.000Z"
    "end_date": "{{ prefect.variables.current_date }}"
  }
  work_pool: *work_pool

It looks like you are doing it correctly based on the documentation here - https://docs.prefect.io/2.11.4/guides/variables/?h=var#in-project-steps That said, I haven’t tested this myself, so I don’t really have a definite answer of what might be the issue here at the moment