Hi everybody, I have a little (it might be also stupid one) for gazebo_ros_prosilica. I want to emulate multi-robot system with some robots equipped with cameras. I found gazebo_ros_prosilica is perfect for me since it uses opencv. So I created my launch files that includes the robots that includes the camera devices with their respective controller of type gazebo_ros_prosilica. The problem now is that all the controllers subscribes to /camera_info (and other topics with the same name but now I focused on this topic). Then I tried two different ways: 1) From the launch file I tried to get, from the xacro file of the robots, the nodeName without any success. 2) I tried to remap topics. I really tried a lot of permutation without any result. I guess the right solution is (from my launch file): I also tried to modify the "from" field with /gazebo/camera_info, ~/gazebo/camera_info ~/camera_info without any result. Does anyone has the same problem? Could someone help me? Thanks a lot. Good work, Neostek P.S. My description of the camera are in another xacro file. So launchFile -> robotXacro -> cameraXacro I do not think that it is the problem, but it is just for a complete explanation.