jQAssistant: How to set "xml.file.include" from the command line?

Question

How can I set the include pattern? I tried it via system properties ("-Djqassistant.xml.file.include=..." or "-Dxml.file.include=..."). I also created a properties file "scan.properties" containing "xml.file.include=..." and passed that to the scanner via "-p". Nothing worked out. Can someone help, please? I am using version 1.12.0.