During February 2026, Stanislas Lambert enhanced the AliceO2Group/O2Physics repository by developing a targeted data-structure feature for the DimuonAll dataset. He introduced boolean flags to indicate track-collision associations, enabling more precise data filtering and supporting downstream physics analyses. Working primarily in C++ and applying data analysis and software development skills, Stanislas aligned the new feature with PWGDQ analytics workflows to improve data quality checks and analysis readiness. The implementation involved close collaboration and code review with team members, resulting in a robust solution. No major bugs were reported, reflecting a focused and well-executed engineering effort during this period.