模拟出错，请教高手~~急

hln6610320

模拟时
     obj.move(pos1);
9 h" S% N8 }8 ^3 F' c& N& j这句老出错，但不知错在哪 ，请教高手~~~
. z6 F4 u8 W/ W1 W% D6 b: ^还有就是装卸站transferstation 的methods初始程序看不懂，
6 ~) u) ~$ l; vi : integer)
-- @ : waiting Target
, C3 {' t) d! z. l; b-- ? : TransferStation
9 b0 r3 A6 x9 V+ W0 @is
7 `% f, ?) z/ W& }2 Vdo
7 H3 h6 C" k7 T9 x if i = 1 then
  -- before starting the transfer to the TransferStation
  -- parts/target are ready
% ]' `7 D: a( m elseif i = 2 then
) w$ f( H% o3 F- p! c. r3 h  -- before parts leaving the TransferStation
end;
end;
; z$ T5 r3 n2 p7 ~" Z如果要设置有条件的卸载，当物件属性integer满足一定数量条件时卸载，应该如何编写？