4-wheel positions and velocities issues

Hello, I am planning to reinforcement learning a 4-wheel car through isaac-gym.

But, I made it possible to use both position and velocities in the process of setting the car’s property, but if the velocities value is entered, the position value does not work. Do you have any solution for this?

One reason why your positions are not setting, especially if you are trying to set position for your front wheels, is because the stiffness on your front wheel joint is 0. If you try to set position on a loose joint, nothing will happen.