Not sure what your difficulty is, but here are some thoughts:

• Try specifying the absolute path to sabcmd: /usr/bin/sabcmd or something similar.
• I assume you realize that \\$xsl is escaping the escape and therefore interpolating $xsl.
• Have you tried printing $boilervalues{'XSLTPath'}, $xsl, and $xml to verify that they are getting values?
• Try print the results of `sabcmd $boilervalues{'XSLTPath'}\\$xsl $xml` to verify that it is returning something. Even if it is fine, it may be a problem with the regex itself failing to match.
• Have you verified that the target text is really there? Try printing that out, too.

Cheers,
Ovid

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