# Is ModelingToolkit.getdefault deprecated?

**URL:** https://discourse.julialang.org/t/is-modelingtoolkit-getdefault-deprecated/119748
**Category:** Modelling & Simulations
**Tags:** modelingtoolkit
**Created:** [September 23, 2024, 2:04pm UTC](https://discourse.julialang.org/t/is-modelingtoolkit-getdefault-deprecated/119748 "2024-09-23T14:04:54Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![kraqbi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kraqbi/32/206682_2.png) [@kraqbi](https://discourse.julialang.org/u/kraqbi)
#### Post date: [September 23, 2024, 2:04pm UTC](https://discourse.julialang.org/t/is-modelingtoolkit-getdefault-deprecated/119748/1 "2024-09-23T14:04:55Z")

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Hello,  
In ModelingToolkit, I find it usefull to have a function to access the default values of parameters.

It took me some times to find the function ModelingToolkit.getdefault()  
I could not find it in the tutorial and it does not have any documentation.  
Is that function deprecated or is the documentation missing?

Thank you!

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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: [September 23, 2024, 3:11pm UTC](https://discourse.julialang.org/t/is-modelingtoolkit-getdefault-deprecated/119748/2 "2024-09-23T15:11:55Z")

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> [@kraqbi](#):
>
> I could not find it in the tutorial and it does not have any documentation.  
> Is that function deprecated or is the documentation missing?

Documentation missing. Never deprecated but it has never been public API. I think it should be elevated to public API though.

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<div class="post-metadata">

### Author: ![kraqbi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kraqbi/32/206682_2.png) [@kraqbi](https://discourse.julialang.org/u/kraqbi)
#### Post date: [September 23, 2024, 3:13pm UTC](https://discourse.julialang.org/t/is-modelingtoolkit-getdefault-deprecated/119748/3 "2024-09-23T15:13:59Z")

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I will raise an issue.  
Thank you.

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### Author: ![kraqbi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kraqbi/32/206682_2.png) [@kraqbi](https://discourse.julialang.org/u/kraqbi)
#### Post date: [September 25, 2024, 10:59am UTC](https://discourse.julialang.org/t/is-modelingtoolkit-getdefault-deprecated/119748/4 "2024-09-25T10:59:25Z")

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I was told that the function :  
defaults(sys) does the same thing.

I think that one should be used rather than ModelingToolkit.getdefault()  
The reference : [The AbstractSystem Interface · ModelingToolkit.jl](https://docs.sciml.ai/ModelingToolkit/stable/basics/AbstractSystem/#Composition-and-Accessor-Functions)