lingo,@for函数莫名报错

lingo,@for函数莫名报错sets:people/1..8/:n;level/1..4/:awarded;link(people,level):x;endsetsdata:n=11,3,8,45,4,40,3,34;awarded=59,30,30,29;enddatamin=@max(level(j):@max(people(i):n(i)/x(i,j))-@min(level(j):@min(people(i):n(i)/x(i,j)));@for(level(j):@sum(people(i):x(i,j))=awarded(j));!@for(people(i):@sum(level(j):x(i,j))=1);@for(people(i):x(i)