How to pass command line options to the java compile through "comsol compile"

Hello, My problem is that my system JDK (on linux) is more recent than what comsol accepts. As far as I remember the java compile can be instructed to produce class files with older versions (using the -target option?). My question is, how can one pass this option to the java compile through the 'comsol compile' script? comsol compile -jdkroot /path/to/jdk ???? my_file.java Thank you Daniel