# Modifying NLobjective in JuMP?

**URL:** <https://discourse.julialang.org/t/modifying-nlobjective-in-jump/11942>\
**Category:** Optimization (Mathematical)\
**Tags:** question\
**Created:** [June 25, 2018, 6:43pm UTC](https://discourse.julialang.org/t/modifying-nlobjective-in-jump/11942 "2018-06-25T18:43:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![e3c6](https://avatars.discourse-cdn.com/v4/letter/e/e79b87/32.png) [@e3c6](https://discourse.julialang.org/u/e3c6)\
**Post date:** [June 25, 2018, 6:43pm UTC](https://discourse.julialang.org/t/modifying-nlobjective-in-jump/11942/1 "2018-06-25T18:43:49Z")

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I have a nonlinear optimization problem setup in JuMP that I just solved. Now I want to modify the objective.  
If I just call `@NLobjective` with the new objective, will I get a hot-start in the next call to `solve`?

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**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:** [June 25, 2018, 8:55pm UTC](https://discourse.julialang.org/t/modifying-nlobjective-in-jump/11942/2 "2018-06-25T20:55:43Z")

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It depends upon the solver. With Ipopt, the answer is yes.