Add distinct objects in Cloned environments

Hello,

In my environment, there is a robot and a set of objects to grasp placed in a tray. I would like to use the GridCloner to clone the robot and the tray. After the environments are cloned, I’d like to add different objects individually in each cloned environments.

However, currently if I add an object in the env_0, then the object is automatically added to all cloned environments. Do someone know how I could add object in env_0 and avoid it to be cloned in all envs?