Thanks for the update.
The correct way to parse this file would be to use the XML Parser and not the default PatternParser.
Unfortunately, the XML parser currently does not support parsing child nodes collectively. It only supports text nodes. I have addressed this issue, so this functionality will be supported in the next release.
Beginning with the next release (scheduled for Feb), you should be able to parse the file with:
<SECSMessage time="%d">
<SECSData>%m</SECSData>
</SECSMessage>

Hope that helps,
Toby