During September 2025, Daniel focused on enhancing the robustness of URL parameter handling in the EOX-A/EOxElements repository. He addressed a critical bug in the update-url helper, ensuring that when multiple values are provided for a URL search parameter, each value is appended individually rather than overwriting previous entries. This JavaScript-based solution improved the reliability of front end features that depend on multi-value URL parameters, such as filtering and searching. By isolating the fix to a well-scoped part of the codebase, Daniel minimized the risk of regressions and contributed to more predictable, maintainable state management in the application.