Problems with dual robot example

Hello everyone,

I try to use the ur_example_dual_robot example. Installation and catkin_make are working but when I started the dual_robot_startup and then only one of the two robots is visible correctly in correctly in rviz. I also get in rviz an error that the robot model is not transformed in the world. In the Joint trajectory controller I can also just choose the robot which is correctly visible in rviz.
I just followed the instrcution. The only thing I changend is the port in polyscope from 50005 to 60002. Thanks for your help!

I solved the problem!

I had to use a different ur_controll.launch for each robot so they can use different ports