waitpipe und RxBuffer1 -> Compilererror

program bla;

Device = mega128, VCC=5;

Import
  SysTick,
  SerPort;

From System import
  Pipes,
  Processes,
  longword;

from SysTick import
SystemTime32;

Define
  ProcClock      = 16000000;       {Hertz}
  SysTick        = 10;             {msec}
  StackSize      = 250, iData;
  FrameSize      = 300, iData;
  Scheduler      = 128, 128, iData;
  {----------------------------------------------------------------------------}
  SerPort        = 57600, Stop2;    {Baud, StopBits|Parity}
  RxBuffer       = 8, iData;
  TxBuffer       = 8, iData;

uses ;

Implementation

{$IDATA}

const

type

var

begin
  ENABLEINTS;
  WriteLn(SerOut, 'Los');
  PipeFlush(RxBuffer);  //OK
  PipeFlush(RxBuffer1); //OK
  WaitPipe(RxBuffer);   //OK
  WaitPipe(RxBuffer1);  //Error: var expected
  loop
  endloop;
end bla.