I have an ODK2.0 form which contains a linked_table to a form (let’s call it the “child” form). In the child form, the user will enter a single integer called “numberOfCans” and then finalize that child form instance. How can I return this integer value back to the parent form for use for validation in the parent form? Would it be something like data(’<some_unique_form_id>.numberOfCans’)?
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This is doable! You are going to need to use queries and async_assign to feed the data back up to the parent form. See here: https://docs.odk-x.org/xlsx-converter-using/?highlight=async_assign#customizing-prompts for some details and examples of async_assign and let us know any follow-up questions after that.