the plugins problem

[Suvian-wy]

hi! I want to do some change in plugin, when i just want add gzdbg<<to print some message. however, it will print nothing.
I even used catkin build and rebuild it again, but it seem that the code is alaway the initial code. My change is usless. So could help me?

[Suvian-wy]

I notice that the program is always use /opt/ros/melodic/lib/librotors_gazebo_ros_interface_plugin.so, which is never changed from install on. So what should I do make them update or using the librotors_gazebo_ros_interface_plugin.so in other place？Maybe we should make some change in CMakeLists.txt, but I have no idea how to do it. So could you help me?

[Suvian-wy]

I find I just delete thhese *.so in /opt/ros/melodic/lib, then everything be OK!