[WiPaS]

Hello everyone. I have a bug and i don't understand where is it.
When my friend buy house everythink ok, but when i want to buy a house. I get text "Jus turite nama", that means i already have a house. When i remove that line i get another text. "Sis namas jau nupirktas" , that means This house is already owned. Here's code:
http://pastebin.com/MQep3PEu

P.S Sorry for my bad english