does anybody know how to execute a jar file using Rational Robot?

I have a project stored in a jar file. I tried executing it using "start application" option and specifying the jar file name as the name of the executable, but i'm getting an error message saying "Unknown executable file type. Unable to load program".

I also tried executing it using "start java application" option specifying the main class name and setting the classpath to that jar file and all other jar files(specified in the manifest.mf file). But even this is not starting my project.

Any help?