If you modify a probe and recompile it, you may need to remove probe instrumentation from your project's class and jar files and then reapply the probe.
Some kinds of changes affect only the probe's class files, so you don't need to reinstrument your project's class and jar files to use the modified probe.
Parent topic: Creating and using probes
Related tasks
Removing probe instrumentation
Compiling probes
Applying probes