Overview

The Hierarchical Dropdowns (HD Control) in OutSystems is a custom UI component designed to display hierarchical data (like countries and states) within a single dropdown. Instead of using multiple cascading dropdowns, this control allows nested data to be represented in one dropdown with indentation or grouping for clarity.
Upon selection, the full hierarchical path (e.g., "USA > California > Los Angeles") is displayed as the selected value, providing clear context to the user.