Comment #3 on issue 618 by pekka.klarck: Java long and Long parameters are passed as BigInteger
http://code.google.com/p/robotframework/issues/detail?id=618
How do you try to use this keyword and what exactly happens? I expect something fails so what error you got?
You seem to be using JavaLibCore and I suspect that it doesn't handle non-string arguments properly. I need to ask more details from others who know JavaLibCore better.
