this sphere and line appears when i select a model i created in houdini, i dont know what is it.

thanks!

Lol, that is the instance “pin”. If you have instances in your asset and you move one of the instances, the Unity plugin will “pin” it so if the asset changes the way your instances are scattered your “pinned” instance will stay where you moved it. It's a way to art-direct a procedural result without losing the procedural nature of the asset entirely.

There should be a button on the instanced GameObject to “UnPin” it.

wow! thats amazing!