iCal binding: Eventfilter in things file not working with textEventValue

How do I define the eventfilter in a .things file in Openhab 3+?

I always get this error

image

when I do this
textEventValue="Bio", textValueType="REGEX"

or this
textEventValue="Bio", textValueType="TEXT"

in my eventfilter thing.

Whole thing:

Thing  icalendar:eventfilter:feedd0d0 "Tomorrows events" (icalendar:calendar:deadbeef) [ textEventValue="Bio", textValueType="TEXT",  maxEvents=5, datetimeUnit="DAY", datetimeStart=1, datetimeEnd=14, datetimeRound=true, refreshTime=15 ]`