Quote - I Take a sample . I buy a Static Building , But Ooohh The door does not open, but that door should open as it is needed for my clip , ain't it soo tha the Product is sold to be used in clips ? But it does not work , so why not being able to sell that Imprvement to the Building ?

Is not so simple. You build a room for a scenario and you can put many doors and windows. The doors and windows are not doors of windows, it are only a plane with a door or window texture and there are plenty of beautil textures of doors and windows, so the rendering of the scene will be something excellent. The second point is that the walls are only planes, so if the set the backcull option in the rendering settings, the walls will not obstruct the camera. In the end you have a room that a low polygon number, render fast and produce excellent scenes.

But the doors are fake doors that never open. If you want a door to open the situation gets rather complicated. The door cannot be a simple pece of plane with a proyected texture, it must have 3d, The door itself is not a big problem, you can use a cube instead of a plane and continue to use the same texture. The problem is that the door needs a frame that cannot be a plane and so the walls that once were a plane, now have 3d. The problem doesn't end here. If you open the door there is nothing on the other side. The floor abruply ends at the door and with a void after the door. You need to extend the floor of your room to the other side of the door with a same texture or other compatible with the first. You solved the floor problem, but what you see on the other side is a void, you must put something there. What do you put at the other side of the door? another room with walls? a garden ? a street ?

In the end, you will have to build a complex building divided into props or figure actors that can be hidden/unhidden, a big polygon count and very much expensive product. There is no possible update for the first simple product to make the door open. If you want a moving door, buy a more complicated product or divide the animation into parts where each part uses simple products and then join the parts editing the trasition between the scenarios

Stupidity also evolves!