How to "Drop to Frame" in eclipse during a TestNG test?

Hi have several methods inside TestNG classes.

In Eclipse, How can I replace code inside a @Test annotated method and get it recompiled in runtime?

I always get a popup with "Obsolete Methods on the Stack" telling me that "the VM was unable to remove all stack frames running old code from the call stack..."

And I can only Terminate, Restart or Continue, which will still run the old code, highlighting non-existing lines etc

Thanks in advance!