Hi, issue running flow in UI. optional parameter is treated as empty string:

hi @Patrick Tan - how is your flow type hinted?

@flow def run_priceguide_etl( sale_date: str, visual_search_image_seqs: list[int], file_path: str, profile: str | None = None, ) -> None:

interesting - so it seems that we are not correctly handling the 3.10+ optional syntax here. i reproduced your example, but then this works as expected for me

@flow
def foo(
    x: int,
    y: int,
    z: Optional[int] = None,
) -> int:

resulting params if

z

not passed

{
  "x": 24,
  "y": 24,
  "z": null
}

Are you saying it is reverted already? or I need to wait for the fix to be deployed

it's out now!

there may be a lurking problem here related to our creation of the flow's openapi schema - @Patrick Tan could you confirm whether the UI fix has resolved your problem? if something changed in the last day for you, that is more likely to be the cause than any SDK problem, which we have not released since last week