You can nest a function within another function in a formula.
For information on using the Formula Editor to enter a formula at design time, refer to Entering a Formula in the Spread Designer Guide. For details on the functions and operators that can be used to create a formula, refer to the Formula Reference.
Return to the overview of Managing Formulas in Cells.
Using Code
 Specify the reference type, if cells are referenced in the formula.
 Use a function within another function in a formula
Example
In this example the sum of the value in two cells (found by using the SUM function) is embedded in a PRODUCT formula. First the cell types are set and the values of the cells are set.
C#  Copy Code 

fpSpread1.Sheets[0].Cells[3, 1].Formula = "PRODUCT(A1, SUM(A2,A3))";

VB  Copy Code 

FpSpread1.Sheets(0).Cells(3, 1).Formula = "PRODUCT(A1, SUM(A2,A3))"
