Problem in Filtering Sources in logging application block enterprise library

Feb 11, 2008 at 5:45 AM
I am using enterprise library logging application block(3.0) April 2007 configuration tool,i created two nodes of sources, named as "Trace" and "UI" under category sources nodes , both source uses FLat File Trace Listner and Flat File Trace Listne1 respectivelty
the problem is that when i add two categories
in my logentry as
logEntry.categories.add("UI") and then use category filter that deny all category sources except " Trace"
it does not add information to their respective Flat File Trace Listners
can any body help me , where m making mistake