# Parameters for callbacks in DifferentialEquations.jl

**URL:** <https://discourse.julialang.org/t/parameters-for-callbacks-in-differentialequations-jl/22731>\
**Category:** General Usage\
**Created:** [April 4, 2019, 3:58am UTC](https://discourse.julialang.org/t/parameters-for-callbacks-in-differentialequations-jl/22731 "2019-04-04T03:58:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![neuralian](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/neuralian/32/8859_2.png) [@neuralian](https://discourse.julialang.org/u/neuralian)\
**Post date:** [April 4, 2019, 3:58am UTC](https://discourse.julialang.org/t/parameters-for-callbacks-in-differentialequations-jl/22731/1 "2019-04-04T03:58:48Z")

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Is there a way to pass additional parameters to event detector and event handler functions in DifferentialEquations? (Other than by the obvious kluges, using globals or adding the parameters to the state vector with dp/dt = 0?).  
Thanks.

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**Author:** ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Post date:** [April 4, 2019, 4:12am UTC](https://discourse.julialang.org/t/parameters-for-callbacks-in-differentialequations-jl/22731/2 "2019-04-04T04:12:11Z")

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integrator.p

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**Author:** ![neuralian](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/neuralian/32/8859_2.png) [@neuralian](https://discourse.julialang.org/u/neuralian)\
**Post date:** [April 4, 2019, 4:21am UTC](https://discourse.julialang.org/t/parameters-for-callbacks-in-differentialequations-jl/22731/3 "2019-04-04T04:21:38Z")

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Thanks!