Column width not preserved when report exported to excel

[Ram.s]

Hi,

I've set table witdth as 100% and tried setting column widths in %,inches,cms, etc. The column width did change in the birt preview but is not preserved when report exported to excel.  In excel, all the columns constantly appear to be of same width of 46px, irrespective of what width i set for them in the birt report (.rptdesign file)

How can i make the column width effect in the excel file also?
Can anyone solve this out for me..?

Thanks in advance