problem with NtCreateFile

the return value is STATUS_EA_LIST_INCONSISTENT (0x80000014L)
and if i assign ,to the last parameter,
EALength * sizeof(FILE_FULL_EA_INFORMATION)
the problem persists

Code:

---

//  us is a UNICODE_STRING with the filename

    HANDLE hFile;
    IO_STATUS_BLOCK IO;
    OBJECT_ATTRIBUTES oa;       
        const ULONG EALength = 1024;
    FILE_FULL_EA_INFORMATION EA[EALength];

        memset(&oa,0,sizeof(oa));
        oa.ObjectName = &us;
        oa.uLength = sizeof(OBJECT_ATTRIBUTES);

  int  ret = NtCreateFile(&hFile,FILE_LIST_DIRECTORY | FILE_TRAVERSE,&oa,&IO,0,0,FILE_SHARE_READ,FILE_OPEN,FILE_DIRECTORY_FILE,EA,EALength);

---

??

it's all ok,the call works if the EA and EALength parameters are set to 0