# Multiple amount of summations in JuMP

**URL:** <https://discourse.julialang.org/t/multiple-amount-of-summations-in-jump/27083>\
**Category:** Optimization (Mathematical)\
**Tags:** question, jump\
**Created:** [August 1, 2019, 5:11pm UTC](https://discourse.julialang.org/t/multiple-amount-of-summations-in-jump/27083 "2019-08-01T17:11:43Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\
**Post date:** [August 3, 2019, 8:39am UTC](https://discourse.julialang.org/t/multiple-amount-of-summations-in-jump/27083/2 "2019-08-03T08:39:53Z")

</div>

Try using the `@NLobjective` macro:

```nohighlight
@NLobjective(model, Min, sum(sum(x[i, j] for j in 1:J) for i in 1:N))

```

You should also read [Please read: make it easier to help you](https://discourse.julialang.org/t/psa-make-it-easier-to-help-you/14757) and provide a minimal example of what you are trying to achieve.

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