Have you checked the Comfiguration Guide chapter called "Matchers"? There you find this example:
Code:
<configuration>
<matcher type=“pcre” debug=“yes”>
<pcre global=“yes” verify=“yes”> <re optimize=“no”>([Aa]+)([Bb]+)<re> <output command=“lowercase”>
<format>[$2, $1]</format> </output>
</pcre>
</matcher>
</configuration>
Quote:Assume that we are applying the regular expression (a+)(b+) to the string xxabbxx . If the formatting specification is foo $2 $1 bar then the t component of the match will be foo bb a bar . If the formatting specification is $0 then the t component of the match will be abb .
If you post your xml which does not work it is easyer to help.
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