lingo错误分析：csets:a/23..46/:m,n; endsets @sum(a(i):n(i))=4;

lingo错误分析：csets:a/23..46/:m,n; endsets @sum(a(i):n(i))=4;
sets:
a/23..46/:m,n;
endsets
@sum(a(i):n(i))=4;
@sum(a(i):m(i))=5;
@sum(a(i):m(i)*n(i)*(3+(i-1)*0.5)=89;
@for(a(i):@gin(m(i)));
@for(a(i):@bin(n(i)));
end
错误1017
请帮忙分析错误