openHAB - Filtering event logs

I am having a challenge filtering out content from my openhab.log

I’m using the TCP binding to talk to my home lighting system. The lighting system is very chatty and sends out information which openhab tries to interpret which leaves me with lots of warning messages that look like this:

2020-10-30 15:17:37.206 [WARN ] [rm.AbstractFileTransformationService] - Could not transform 'SW 1 89 4 0' with the file 'butler.map' : Target value not found in map for 'SW 1 89 4 0
'

I’m using the following in my org.ops4j.pax.logging.cfg file, which is posted right after the # Rolling file appender

# filter out Vantage Transforms
log4j2.appender.out.filter.vantage.type = Filters

log4j2.appender.out.filter.vantage.type = RegexFilter
log4j2.appender.out.filter.vantage.regex = .*(Could not transform).*
log4j2.appender.out.filter.vantage.onMatch = DENY
log4j2.appender.out.filter.vantage.onMisMatch = ACCEPT

This is having no effect and I still receive lots of messages in the log…

Any idea on what I am doing wrong?