Not sure. The perform with details=>true returns the full hash as it was received from finanzonline which would look like this: 

{:rc=>\"0\", :name=>\"Livadaru Cristian\", :adrz1=>\"bla bla\", :adrz2=>\"A-1110 Wien\", :adrz3=>nil, :adrz4=>nil, :adrz5=>nil, :adrz6=>nil, :\"@xmlns:ns5\"=>\"https://finanzonline.bmf.gv.at/fon/ws/uid\"}