text: public ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0) {int rnum;if (arg0 instanceof AreaEval) {rnum = ((AreaEval) arg0).getFirstColumn();} else if (arg0 instanceof RefEval) {rnum = ((RefEval) arg0).getColumn();} else {return ErrorEval.VALUE_INVALID;}return new NumberEval(rnum + 1);}