Quote: "I tried to add some gold on table,but i can't do it. If somebody knows how to do it, to write, please? "
1. Place your table. In this example, I am using Dark Egypt room segments and a table from the stock WW2 (tabled).
2. Select the gold. In this example I am using the gold bar from stock WW2 (items). Notice how the gold bar is on the floor when I select it and have it in the editor next to the table.
3. While I have the gold on my mouse, I move it so it sits "under" the table.
4. I press "enter" and the gold bar will snap up to the table top height, allowing me to place on the table.
5. I can right click on the gold bar and view it to ensure it is on the table.
You can right-click in the window (while in properties mode) and use Page Up/Page Down keys to raise/lower (holding Ctrl+Page Up/Page Down allow for smaller increments).

There's no problem that can't be solved without applying a little scripting.