🚀 go-pugleaf

I have problems to use some functions in CBuilder which I wrote in Delphi:

function ConvertCodeToKey(Code: string): TKey;
function CheckRegistration(Name: string; Key: TKey) : boolean;
function ConvertNameToKey(Name: string): TKey;
function ConvertKeyToCode(Key: TKey): string;

TKey is defined as follows:

type
         TKey = array [0..15] of Byte;

These functions are converted by CBuilder to:

extern PACKAGE Byte __fastcall ConvertCodeToKey(AnsiString Code);
extern PACKAGE bool __fastcall CheckRegistration(AnsiString Name, const 
Byte * Key);
extern PACKAGE Byte __fastcall ConvertNameToKey(AnsiString Name);
PACKAGE AnsiString __fastcall ConvertKeyToCode(const Byte * Key);

My problem is how to access the array of bytes in CBuilder. It returns 
only one byte and not the whole array. Or is this the pointer to the array?
I tried it by the following code but CheckRegistration is always false 
even with a matching pair of user name and key:

bool Regd = false;
AnsiString RegKey = "2LTNRVJRYSN:][aM";
Byte Key = ConvertCodeToKey(RegKey);
ShowMessage(IntToStr(Key));
if (!CheckRegistration("Rolf Fankhauser",&Key))
  Regd = FormRegistration->InputRegistration("REBEKA","TestReg.ini",15);

if (Regd)
  ShowMessage("Registered!");
else
  ShowMessage("Not registered!");

Any idea how to get the whole array of byte?