How to get acces to XML tag attributes via XPath parser settings? I need to parse XML attributes via Feeds Importer XPath parser

exitsting XML tag structure is:

&lt;MunicipalUnion Id="2a1c7bdb-05ea-492f-9e1c-b3999f79dcbc" Name="Moscow" TypeMU="city"/&gt;


If i write @Id, @Name, @TypeMU, result is:
Solution is:
using Xpath string() function

string(@Id)

string(@Name)

string(@TypeMU)