JExcel Help

[Kiran Katwa]

Hi,
this question is related to usage of JExcel API's.
I have an excel file. i have a macro (formula) in a cell,say b3=b1+b2.
Now, using JExcel API's I will open this excel file, copy its contents to another excel file.and write some data into cells b1 and b2.Then I am printing the value of the cell b3 on the console.But,I am getting 0 ,instead of the actual sum.How can I get the value of a cell,which has a formula referring to the other cells.Note that I am changing the values in the cells referred by the formula during run time.
Regs
Kiran