sysindexes: leaves and levels empty?

Hello! I'm playing around with the sysindexes table to write a 'recreate index' utility. I tried --- #!/usr/bin/ksh dbaccess << EOF database sysmaster select idxname, tabid, leaves, levels from sysindexes;EOF --- but the columns for leaves and levels are always empty. I would like to get this information to calculate a value for starting or skipping a 'recreate index'. The printed documentation says nothing about these columns. (Informix Guide to SQL, V 7.2 : System Catalog) Thankx, Erik