Excesive columns in export to xls file

Hi

My problem is when i export a crystalreport 2010 file to excel file the final file in excel has a lot of columns.

How can avoid this issue,?

Is there a propertie that i need to activate or make a special procedure for just include one column for each data column of the crystalreport

I am using crystalreport 2010 with vs 2010

Thanks in advance for your help

Greetings