Callback Action Parameter Nullable Checkbox not working

[SebyOnGitHub]

Has your issue been reported?

• [X] I have searched the existing issues and confirm it has not been reported.
• [X] I give permission for members of the FlutterFlow team to access and test my project for the sole purpose of investigating this issue.

Current Behavior

When cheching on the Nullable Checkbox, the check will never appear.

Expected Behavior

When cheching on the Nullable Checkbox, the check should appear.

Steps to Reproduce

1. create a new component
2. define a new Parameter
3. set the parameter Type to Action
4. add an Action Parameter
5. try to check the nullable checkbox

Reproducible from Blank

• [X] The steps to reproduce above start from a blank project.

Bug Report Code (Required)

IT4olfLl8Yx1m8ta1YSJcMdVryQXHHIkaoEV0cpBazwbfe+uB4kqevfOTERVOP2ld2xAP1r9iWoW097tv9j1VPAVHyeVb6ZqyZNyFxbvQj+iMLq0FJWgS0EmP8RXIBWf38GZghN4NsZfSGQ57Tqpet+RUgnfQ4TYNTIeD6/LZO4=

Context

no context

Visual documentation

Here is an example screenshot where something like this happens:

Additional Info

no additional infos

Environment

- FlutterFlow version: v4.1.45+
- Platform: Web, Windows
- Browser name and version: Chrome 122.0.6261.129
- Operating system and version affected: Windows 10

General

• [ ] I was collaborating with other users in the same project prior to data loss
• [ ] I navigated between different project views leading up to data loss
• [ ] The UI was running very slowly prior to data loss
• [ ] A crash or other bug occurred prior to data loss
• [ ] Data was not saved in a snapshot
• [ ] I was using flutterflow from multiple devices
• [ ] I was using flutterflow from multiple platforms (e.g. both web and MacOS Desktop app)

Relative to the time the changes were made, data was lost within

• [ ] 1 minute
• [ ] 1 hour
• [ ] 1 day
• [ ] 1 week

When following my steps to reproduce, data loss happens

• [ ] ~100% of the time
• [ ] ~50% of the time
• [ ] ~10% of the time
• [ ] ~1% of the time
• [ ] Very rarely or only encountered once

[ignalauret]

Hey @SebyOnGitHub thanks for your report. I can confirm that you can't add a Nullable parameter from the FlutterFlow right menu. I will send this to a technical team so they can confirm if this is a bug, or a feature that is not ready yet. They will keep you updated on this thread.
Have a great day!