text: public override ValueEval Evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1){AreaEval aeRange;try{aeRange = ConvertRangeArg(arg0);}catch (EvaluationException e){return e.GetErrorEval();}return Eval(srcRowIndex, srcColumnIndex, arg1, aeRange, aeRange);}