In February 2026, Mohammad Tohidiyan developed a role-based user experience enhancement for the MyCoRe-Org/mir repository by implementing a PDF Validation Feedback box tailored for users with the Creator role. Leveraging skills in user interface design, XML transformation, and XSLT, he integrated immediate validation status feedback directly into the PDF display workflow. This feature addressed the need for real-time document validation, streamlining the Creator user experience and reducing potential support requests related to PDF issues. The work demonstrated a focused application of XML and XSLT within a targeted feature, delivering depth in both technical implementation and user-centric problem solving.