Worked on the CPMpy/cpmpy repository to enhance runtime stability and ensure compatibility with evolving upstream requirements. Focused on backend development using Python and C++, addressing a persistent runtime error caused by comma-containing multi-dimensional array identifiers in the gcs backend. The solution involved sanitizing variable names by translating array indices to a format compatible with gcs and VeriPB, effectively eliminating illegal variable name errors during testing. Additionally, updated installation and documentation to reflect new C++23 requirements, improving clarity for developers and aligning with current development environments. The work reduced build and runtime failures while streamlining onboarding and future maintenance.