Delphi XE procedures instead of functions after WSDL importer execution

I am trying to consume a NAV 2009 web service from Delphi XE6 (in XE5 is the same), I used "Import WSDL" fron XE6 and the unit created exposes several SOAP methods as procedures instead of functions.

I paste a piece of code generated

Ficha_Cliente_Port = interface(IInvokable)
  ['{928A4E8E-B9A4-4C91-9666-D4DFE550D3CD}']
    function  Read_(const No: string): Ficha_Cliente; stdcall;
    function  ReadByRecId(const recId: string): Ficha_Cliente; stdcall;
    function  ReadMultiple(const filter: Array_Of_Ficha_Cliente_Filter; const bookmarkKey: string; const setSize: Integer): Ficha_Cliente_List; stdcall;
    function  IsUpdated(const Key: string): Boolean; stdcall;
    function  GetRecIdFromKey(const Key: string): string; stdcall;
    procedure Create(const Ficha_Cliente: Ficha_Cliente); stdcall;
    procedure CreateMultiple(const Ficha_Cliente_List: Ficha_Cliente_List); stdcall;
    procedure Update(const Ficha_Cliente: Ficha_Cliente); stdcall;
    procedure UpdateMultiple(const Ficha_Cliente_List: Ficha_Cliente_List); stdcall;
    function  Delete(const Key: string): Boolean; stdcall;
end;

For example the method Create has to return an object of Ficha_Cliente type and there is no return value in this case due to this kind of implementation as procedure instead of function.

I can consume all the functions but no procedures.

I consumed this web service from php and c# whithout problem but I do not know the way to do it with delphi, I am very newbie in Delphi.

Any suggestions?

Thanks in advance.