Public Overridable Sub SetExpression( _
   ByVal row As Integer, _
   ByVal column As Integer, _
   ByVal value As Expression _
) 

Dim instance As DefaultSheetDataModel
Dim row As Integer
Dim column As Integer
Dim value As Expression
 
instance.SetExpression(row, column, value)

public virtual void SetExpression( 
   int row,
   int column,
   Expression value
)

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());

Dim dfltdatamodel As FarPoint.Web.Spread.Model.DefaultSheetDataModel
Dim one As FarPoint.CalcEngine.Expression
Dim two As FarPoint.CalcEngine.Expression
Dim oneplustwo As FarPoint.CalcEngine.Expression
one = New FarPoint.CalcEngine.DoubleExpression(100.0)
two = New FarPoint.CalcEngine.DoubleExpression(20.0)
oneplustwo = New FarPoint.CalcEngine.BinaryOperatorExpression(FarPoint.CalcEngine.BinaryOperatorInfo.AddOperator, one, two)

dfltdatamodel = FpSpread1.ActiveSheetView.DataModel
dfltdatamodel.SetExpression(0, 0, oneplustwo)

Dim x As FarPoint.CalcEngine.Expression
x = dfltdatamodel.GetExpression(0, 0)
Response.Write(x.ToString())