Problem with Web Service Toolkit

[cappe]

I have a problem with call asp.net web server with variable with array.

The varible login is word correctly, but destinatari not work.
The client code is:
 
   Sa := Sa_Type.Create;
   Sa.login:='arial';
   Sa.destinatari.SetLength(5);
   Sa.destinatari[0] := '11111';
   Sa.destinatari[1] := '22222'; 
   Sa.destinatari[2] := '33333';
   Sa.destinatari[3] := '44444';
   Sa.destinatari[4] := '55555';

How do I fix the problem?