# KKT condition solves the bilevel optimization problem

**URL:** <https://discourse.julialang.org/t/kkt-condition-solves-the-bilevel-optimization-problem/43289>\
**Category:** Optimization (Mathematical)\
**Tags:** question\
**Created:** [July 18, 2020, 3:22pm UTC](https://discourse.julialang.org/t/kkt-condition-solves-the-bilevel-optimization-problem/43289 "2020-07-18T15:22:28Z")\
**Posts on this page:** 6\
**Page:** 2

<div class="post-metadata">

**Author:** ![dty](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dty/32/16885_2.png) [@dty](https://discourse.julialang.org/u/dty)\
**Post date:** [July 22, 2020, 1:53pm UTC](https://discourse.julialang.org/t/kkt-condition-solves-the-bilevel-optimization-problem/43289/21 "2020-07-22T13:53:49Z")

</div>

![image](https://global.discourse-cdn.com/julialang/original/3X/6/0/604525674b0c208ad0e91085dfb05297aaf79b49.png)  
I’m sorry, I’ll follow what you said. Try to create a new environment, still installed version 0.1.0. 😭

---

<div class="post-metadata">

**Author:** ![joaquimg](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/joaquimg/32/223_2.png) [@joaquimg](https://discourse.julialang.org/u/joaquimg)\
**Post date:** [July 22, 2020, 1:58pm UTC](https://discourse.julialang.org/t/kkt-condition-solves-the-bilevel-optimization-problem/43289/22 "2020-07-22T13:58:15Z")

</div>

that is very weird.  
try:

```julia
add BilevelJuMP@0.2

```

to force the correct version, it might return the dep error.

---

<div class="post-metadata">

**Author:** ![dty](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dty/32/16885_2.png) [@dty](https://discourse.julialang.org/u/dty)\
**Post date:** [July 22, 2020, 2:04pm UTC](https://discourse.julialang.org/t/kkt-condition-solves-the-bilevel-optimization-problem/43289/23 "2020-07-22T14:04:35Z")

</div>

sorry,It seems impossible.I don’t seem to be able to install version 0.2.0  
 ![批注 2020-07-22 220238](https://global.discourse-cdn.com/julialang/original/3X/b/4/b41dc1c2a0f0b4caac53bc6802c62816ae3f940c.png)

---

<div class="post-metadata">

**Author:** ![joaquimg](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/joaquimg/32/223_2.png) [@joaquimg](https://discourse.julialang.org/u/joaquimg)\
**Post date:** [July 22, 2020, 2:12pm UTC](https://discourse.julialang.org/t/kkt-condition-solves-the-bilevel-optimization-problem/43289/24 "2020-07-22T14:12:55Z")

</div>

If

```julia
] up

```

does not work also, i’d say its a JuliaPro issue.  
I recommend trying:  
[https://julialang.org/downloads/](https://julialang.org/downloads/)  
and test the same commands we tested here.

Once that works and if you really want to use julia pro, I recommend opening an issue with the juliaPro category or contacting their support.

---

<div class="post-metadata">

**Author:** ![dty](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dty/32/16885_2.png) [@dty](https://discourse.julialang.org/u/dty)\
**Post date:** [July 22, 2020, 2:27pm UTC](https://discourse.julialang.org/t/kkt-condition-solves-the-bilevel-optimization-problem/43289/25 "2020-07-22T14:27:15Z")

</div>

I tried to remove, re install and update, but I still can’t install version 0.2.0. However, thank you very much for your reply and help！

 ![image](https://global.discourse-cdn.com/julialang/original/3X/0/b/0b5a95f5007ad96defa2f78b359d76e88fce0c27.png)

---

<div class="post-metadata">

**Author:** ![joaquimg](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/joaquimg/32/223_2.png) [@joaquimg](https://discourse.julialang.org/u/joaquimg)\
**Post date:** [July 22, 2020, 2:36pm UTC](https://discourse.julialang.org/t/kkt-condition-solves-the-bilevel-optimization-problem/43289/26 "2020-07-22T14:36:38Z")

</div>

Did you try the command line version from the link I sent?  
I believe it is a JuliaPro issue.

[Previous page](https://discourse.julialang.org/t/kkt-condition-solves-the-bilevel-optimization-problem/43289.md?page=1)