Exceding the limit of numbers in Excel at target side

Hi ,

I am working on Proxy to file scenario in that data is coming frm SAP tables at source side data type is string and in target side also data type is string .

But when I am getting the data in .csv excel file if the number are exceding the limit they are converted in Exponational form.

let say in 1 coloum if 15 numbers are coimg then it is ok

if they are coming as a 16 numbers they are converting into 453E+11 form .

Please suggest me on this issue...

Regards