How to set Display format of a value when manipulated in table interface

Hello ,

I have used table interface to compute two columns.

I used data_cell method.used I_DISPLAY_VALUE to get value

& c_cell_content to set value.

But on report, computed value is shown in format as

246261695.000000000

How can i define the format. I don't need decimal in this case.

& in same cases i would need after decimal 2 digits.

Thanks for your suggestions

Regards

Deepali