- issue 2926: check whether a value is available rather than causing a crash of the binding runtime
- issue 2926: check whether a value is available rather than causing a crash of the binding runtime

copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI