How do I get 's output back into my ant script?

[S I]

Hi

I'm not quiet sure how to do this?  I wrote a perl script to parse out the 
revision number out of SVN logs.  I call this perl script from my Ant 
build.xml by using <exec> like so

<exec executable="perl c:\revision.pl" os="Windows_NT" resultproperty="?" 
output="?" />

<echo message="${output}" />

I have no clue how to get the perl scripts final result back into my ant 
script.  Am I on the right track using exec?

Thanks



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