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Compiling fmu with Jmodelica

Hi. I am trying to compile a Modelica model that I developed in Dymola as an FMU in Jmodelica. For small models I don't have a problem, but for a medium sized model I get the following error:

IOError: Unexpected output from the compiler, got 'E' in: <compilation> </compilation>Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded

Dump of the log has been saved in c:\users\bwf\appdata\local\temp\JM_LOG_DUMP_6espr8 my question is how do I set the flag for maximum GC memory to false in python/Jmodelica. I have already set my JVM memory to 64 GB which is my RAM!!