@current_parent_value function not working in parent-child table relationships

[tomasMizera]

Description

The @current_parent_value function does not work correctly when used in a child table form to retrieve a value from a parent table in a parent-child relationship between two tables.

Steps to Reproduce

1. Set up a project with two tables linked via a parent-child (1:N) relationship
2. In the child table form, use @current_parent_value('field_name') to reference a field from the parent table
3. Open the child form from the parent feature

Expected Behavior

The @current_parent_value expression should resolve and return the correct value from the parent feature.

Actual Behavior

The function does not return the expected value from the parent table.

Workaround

Using the aggregate() function can serve as a workaround, but native support for @current_parent_value would be the preferred solution.

Environment

• App: Mergin Maps Mobile