[Question] how networked vendors update display

I was just wondering, how do networked vendors' displays (the picture of the item being sold and displayed) get updated remotely by a main controller? I figured they don't pass the texture to the vendors given that object can only give other objects items if they are in the same sim. I'm just curious how it works, can anybody shed some light on this?

They pass the texture UUID.

You can update a texture with llSetTexture via a UUID without the texture needing to be in the object's inventory.

They pass the texture's UUID (key). Using llSetTexture(id, ALL_SIDES);

llSetTexture() accepts either the name of a texture in contents, or a UUID (Key). So, the texture doesn't need to exist anywhere but the asset server, really.

ohh ok, thanks!