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Hi, what's the typical way you would run a ShellTask with an argument that's used in the `command` which is a return from a prev Task?
eg
```with Flow(name='t') as f:
   a = task_a()
   b = shell_task(a)```

That should work and if you get an error you can be explicit
```b = shell_task(command=a)```

let's say I want :
`b = shell_tast(command=f"ls {<http://a.as|a.as>_posix()}")`

The whole `f"ls {<http://a.as|a.as>_posix()}"` needs to be an output of a task

ahh, ok. Got it. That's the trick I was missing.