# \#parameter

**URL:** https://discourse.julialang.org/tag/parameter/1882.md

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## [Is ParametricOptInterface needed to define and use parameters in JuMP?](https://discourse.julialang.org/t/is-parametricoptinterface-needed-to-define-and-use-parameters-in-jump/134498)

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**Author:** [@zdenek\_hurak](https://discourse.julialang.org/u/zdenek_hurak)\
**Replies:** 4\
**Last updated:** [December 11, 2025, 11:12pm UTC](https://discourse.julialang.org/t/is-parametricoptinterface-needed-to-define-and-use-parameters-in-jump/134498 "2025-12-11T23:12:58Z")

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I feel puzzled when it comes to the role of ParametricOptInterface.jl (POI). I think I understand its general mission (in fact the motivating tutorial example Rolling horizon problems · JuMP directed me to it). But it ap…