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Hi everyone! Let’s try here if I get any answer. I’ve having this issue with Prefect 2.20. The parameter is declared as
```pull_request_number: int = None```
in the flow entrypoint. To be able to submit a flow run I have to switch to the json view and remove the null parameters. How can I submit a flow run without switching to the json view and not having this error?

hey! I believe if you switch the typing here to
```pull_request_number: int | None = None```
you should be able to submit without issue.

or `Optional[int]` depending on your python version

I’m on python 3.10, I think I can use Optional[int]. I will try it out soon! Thank you for the suggestion!