function GetGUID: string;
var
  LTep: TGUID;
begin
  CreateGUID(LTep);
  Result := GUIDToString(LTep);
  Result := StringReplace(Result,'}','',[rfReplaceAll]);
  Result := StringReplace(Result,'{','',[rfReplaceAll]);
  Result := StringReplace(Result,'-','',[rfReplaceAll]);
end;