Width of bars in Column Chart (in a Webi report)

Hello everyone,

How do I of set the (default/minimum) width or bars in a Column Chart (in Webi report)? I checked out the below tutorial on SAP SCN and it says that Charts do not support CSS attributes. I don't know which installation file (or jsp file) to update, would someone please shed some light on this?

Web Intelligence 4.0 FP3: Modify the default style sheet

Thanks,

Mahboob Mohammed