lingo a syntax error has occurred

lingo a syntax error has occurred
model:
sets:
l/1..209/;
r/1..209/;
links(l,r):a;
matrix1(l,r):x;
endsets
data:
a= !这里a矩阵太大,没有贴上来,大神看看语句哪里不对,因为要做a.*x的最小值,x是一个0-1阵
每行每列和都为1
enddata
z=@for(l(i):@for(r(j):@sum(a(i,j)*x(i,j))));
@for(matrix1:@bin(x));
@for(l(i):@sum(r(j):x(i,j))>0);
@for(r(j):@sum(l(i):x(i,j))>0);
min=z