Dynamic data attachment - expose hidden variables (_uuid, _validation)

Hi, is there a reason why not all variables are available for dynamic data attachment? Specifically some metadata / server-generated variables?

I can see use cases such as:

  • Use _uuid to check for duplicates without creating an error when editing the form
  • Use start/end/_index to find the most recent submission (technically might be possible by creating a custom datetime variable but would be a cleaner solution)
  • Only allow child forms for a given ID to be filled out if the parent form with the same ID has been validated

Is this something that would be possible / is planned at all?


@amschel, we have a GitHub issue with this suggestion. You should be able to follow it here:

Thanks so much!

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