unrecognized function or variable

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Hi all,
I am trying to solve a basic vrp problem. I try to implement a new subtour constraint that I learned recently. However, I get "unrecognized function or variable" error even though I try to define. The new piece of code I added is below. I used same method for my other constraints and none of them made an error. I cannot pass the error "Unrecognized function or variable 'conss19'.". How can I overcome this problem ?
for i = n
for j = n
if i>=2
if j~=i
if j>=2
conss19(i,j) = (u(i)-u(j)+n*x(i,j))<=n-1;
end
end
end
end
end
vrp.Constraints.conss19 = conss19;

采纳的回答

Torsten
Torsten 2022-4-20
j will always equal i since both are n.
So conss19 is not existent.
  1 个评论
Kk
Kk 2022-4-20
Thank you very much Torsten. Now I understand, I forgot to write "1:"

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