Worked on the DUNE/duneopdet repository to address a critical issue in the optical detector configuration, focusing on improving the accuracy of photon detection efficiency (PDE) interpretation. Delivered a targeted bug fix by converting PDE values from absolute numbers to decimal percentages within the FHiCL-based configuration file, ensuring that downstream calculations and detector simulations reflect the true detector response. This change reduced the risk of biased physics analyses and improved calibration fidelity. Demonstrated skills in configuration management, careful patching, and version control, collaborating through code reviews to ensure reproducibility and maintainability of the detector configuration process. No new features were added.