I have resolved the problem. The count is from zero for number of groups just delete ros_assert. This have a while.
In rostopic now already it’s show me all joints in time real. Also, I move the robot (R1, R2, B1) and it’s change the joint values. This load yaml of 4 groups (same file), but do not show values of B2 joint.
So, I will start to do test of moving robot. thanks!!!