What I am doing wrong????? :/

[Zingaro]

Hello can someone please help me, because I am really going crazy. I have read and watch all the is around for building in empty shells, high raise buildings and all is going wrong for me.

Here are the pictures:
1-> Lobby-Builded and put the balls fo the hidden room and for the public room



2-> Skip to the level were it is supose to build, pic below and please see the arrow



and it stays down below the area were i can build , please see the pic below were the arrow is pointing.



3-> And last but not least when i skip all levels and gives the roof, N.º1 is the boundary for the build level, and N.º2 is were i can build.



All help is appreciated.

Tks in advance.

[saywhat]

You see picture 2? Turn on testingcheatsenabled true and turn on restrictbuildbuyinbuildings off. On Picture 2 add the walls you need. ;0