ros logger configuration file definition for node defined inside a group namespace in launch file

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Hello

I am attempting to write a configuration file (and point ROSCONSOLE_CONFIG_FILE environment param) to control the verbosity level of output for different packages. I have read the configuration , Section 2 of rosconsole page. This works for the packages not defined inside a group namespace tag in launch file by defining the verbosity level as log4j.logger.ros.MY_PACKAGE_NAME=DEBUG.

My launch file contains node launches defined in a group. How can I identify a node of same executable type of the MY_PACKAGE_NAME package inside a group name-space GROUP_1 in the configuration file ?

Thank you