"RapidMiner process integrated in Java - how to execute macros."

Based on the following post:
http://rapid-i.com/rapidforum/index.php/topic,7785.msg26715.html#msg26715

I was able to build a java application that executes the a RapidMiner process. 
  Process process = new Process(new File("C:\\Users\\Goutham\\.RapidMiner5\\repositories\\Local Repository\\TTT_REFACTORING/HTTP_ct5_categories.rmp "));
          process.run();
          */

I would like to pass macro to this process in java.  Has anybody had success in doing this in java..
I know you can execute this at command line: 
/scripts/rapidminer -f ../TTT_REFACTORING/HTTP_ct5_categories.rmp "-MdateT=2010-11-11" "-Mtmzone=PST" "-MOutFile=/tmp/HTTP_ct5_cat_result.csv"

Thanks.