FarPoint.CalcEngine.Expression one;
FarPoint.CalcEngine.Expression two;
FarPoint.CalcEngine.Expression oneplustwo;
FarPoint.Web.Spread.Model.DefaultSheetDataModel dataModel;
one = new FarPoint.CalcEngine.DoubleExpression(100);
two = new FarPoint.CalcEngine.DoubleExpression(20);
oneplustwo = new FarPoint.CalcEngine.BinaryOperatorExpression(FarPoint.CalcEngine.BinaryOperatorInfo.AddOperator, one, two);
dataModel = (FarPoint.Web.Spread.Model.DefaultSheetDataModel)FpSpread1.ActiveSheetView.DataModel;
dataModel.SetExpression(0, 0, oneplustwo);
FarPoint.CalcEngine.Expression x;
x = dataModel.GetExpression(0, 0);
Response.Write(x.ToString());