should i re-open the issue

this one

from __future__ import absolute_import, division, print_function
from typing import Optional

from flytekit import task, workflow, dynamic
from flytekit.types.file import FlyteFile

@task
def hello(myfile: Optional[FlyteFile]) -> Optional[FlyteFile]:
    return None

@dynamic
def dyn_hello(myfile: Optional[FlyteFile]) -> Optional[FlyteFile]:
    return hello(myfile=myfile)


@workflow
def child_workflow(myfile: Optional[FlyteFile]) -> Optional[FlyteFile]:
    hello_output = dyn_hello(myfile=myfile)
    return hello_output

have you had the chance to test it out @Kevin Su

going to create a pr, sorry for the late reply.

im curious how they depend on the backend, Does flyteadmin installs flytepropeller in its running container? since i have another flytepropeller container running alongside flyteadmin

I just upgrade admin, and it works for me

pingsutw/flyteadmin:673e401af18b18480c629c68ff4aaeea7f506e12

just confirmed it is working in my sandbox thanks