Reducing output

[Bogle, Brittany]

Hello,

I am using the CPE with:
Analysis Engine: AggregatePlaintextFastUMLSProcessor
CAS Consumer: FileWriterCasConsumer (writing to xml file).

I've been trying to figure out how to take an existing CAS consumer and modify 
it to only output what is necessary, since most of the default output is not 
useful for me and large files.
I basically just want two things: the UMLSconcepts and the oncology output (to 
get the polarity associated with the UMLS concepts).

I thought just commenting out all <outputs> in the analysis_engine except the 
two below would do the trick:
   </typePriorities>
    <fsIndexCollection/>
    <capabilities>
      <capability>
        <inputs/>
        <outputs>
<type 
allAnnotatorFeatures="true">org.apache.ctakes.typesystem.type.refsem.UmlsConcept</type>
<type 
allAnnotatorFeatures="true">org.apache.ctakes.typesystem.type.OntologyConcept</type>

But this doesn't seem to be changing anything.  Does anyone have a quick 
example or explanation of how I would minimize the outputs in an existing 
analysis engine?

Thanks!
Brittany