DynamicArray<AnsiString> is not been parsed correctly?

[Jojo]

I used the WSDLimporter imported a wsdl file in Borland 6.0. The
following type and a function were created:

typedef DynamicArray<AnsiString> getGroupUsersListResponse;

virtual getUserGroupsListResponse getUserGroupsList(const AnsiString
userId, const AnsiString appPrefix) = 0;

When I called "getUserGroupsList" in my testing program as the
following. The return is always empty. So I believe that the response
was not been parsed correctly and the return array is not been
filled.

Does anyone know a solution for this problem?

//---------------------------------------------------------------------------
void __fastcall TfrmWSClient::Button1Click(TObject *Sender)
{
const AnsiString sURL = edtURL->Text;
_di_LDAPMaintenance ldapInfo = GetLDAPMaintenance(false, sURL);
const AnsiString sUerID = edtUserID->Text;
const AnsiString sAPP = edtAppPreFix->Text;
getUserGroupsListResponse theGrp;
try
{
theGrp = ldapInfo->getUserGroupsList(sUerID, sAPP);
if (theGrp.Length <=0) //this is always true!!
{
ShowMessage("No group found for this user");
return;
} else
lblUserGroup->Caption = theGrp[0];

}catch (Exception &E)
{
ShowMessage("Can not retrive this user's group information" +
E.Message);
return;
}

}