Otherwise it's not in the variables as shown here:
http://help.solidworks.com/2013/french/enterprisepdm/itemexplorer/t_Adding_Columns_to_Named_BOMs.htm.
Or the 'part number' shown here:
http://help.solidworks.com/2013/french/enterprisepdm/admin/idd_edit_column.htm
So it must not be possible to sort in the order of the feature manager... But by creating the 'BOM' in SolidWorks, we can't reuse it in EPDM? It would be simpler...
If I help, please choose one of my answers as the best to earn some points ;-)
It's because it uses the SolidWorks BOM that it can display the number in the image I posted above: . http://blog.design-point.com/blog/2012/december/solidworks-bills-of-materials-with-epdm.aspx#.VNNNaNBKHqD