模拟出错，请教高手~~急

hln6610320

模拟时
) ?' W/ G+ m6 ?2 E     obj.move(pos1);
这句老出错，但不知错在哪 ，请教高手~~~
还有就是装卸站transferstation 的methods初始程序看不懂，
" I9 B8 ~" e1 {* li : integer)
" ^! K- W: N% H-- @ : waiting Target
-- ? : TransferStation
" n1 a+ g, i7 j% r* x1 Dis
9 M: d: _- u- f; Y' w) pdo
6 A4 e7 i$ }; ~) X7 C" Y if i = 1 then
  -- before starting the transfer to the TransferStation
7 p9 G1 o' a4 u$ C$ t  -- parts/target are ready
elseif i = 2 then
  -- before parts leaving the TransferStation
% X- m: T: I/ v4 E" W& E end;
end;
) t( n, `! `8 o! E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？