[LUA] Can I have multiple copies of the same building in a city?

Can I use LUA to add the same building to a city more than once (i.e. a dummy building that gives a specific resource)? Is it just a matter of doing, say, "pCity:SetNumRealBuilding(XXX, 3);" or do I have to do something special?

Does having multiple copies of a building in a city cause any problems?

Thanks in advance.