# Duct upstream components returning an unexpected 'Null'

**URL:** <https://forum.dynamobim.com/t/duct-upstream-components-returning-an-unexpected-null/95397>\
**Category:** Packages\
**Tags:** mepover\
**Created:** [November 10, 2023, 2:17pm UTC](https://forum.dynamobim.com/t/duct-upstream-components-returning-an-unexpected-null/95397 "2023-11-10T14:17:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![johnbim](https://avatars.discourse-cdn.com/v4/letter/j/a5b964/32.png) [@johnbim](https://forum.dynamobim.com/u/johnbim)\
**Post date:** [November 10, 2023, 2:17pm UTC](https://forum.dynamobim.com/t/duct-upstream-components-returning-an-unexpected-null/95397/1 "2023-11-10T14:17:54Z")

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Hi all,

Any ideas on why im getting a null value in the ‘Duct upstream components’ node from MEPover?

It worked fine for me when i used it in Revit 2021, But when i recreates my script in Revit 2023 it give me nulls

Any help appreciated

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/0/5/05162712c5183f37094a91ddef6a24879c6af5dc.png)

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**Author:** ![sovitek](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sovitek/32/116237_2.png) [@sovitek](https://forum.dynamobim.com/u/sovitek)\
**Post date:** [November 10, 2023, 2:43pm UTC](https://forum.dynamobim.com/t/duct-upstream-components-returning-an-unexpected-null/95397/2 "2023-11-10T14:43:23Z")

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Hi @johnbim do you have dynamoironpython 2.7 package installed ?

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<div class="post-metadata">

**Author:** ![johnbim](https://avatars.discourse-cdn.com/v4/letter/j/a5b964/32.png) [@johnbim](https://forum.dynamobim.com/u/johnbim)\
**Post date:** [November 10, 2023, 2:49pm UTC](https://forum.dynamobim.com/t/duct-upstream-components-returning-an-unexpected-null/95397/3 "2023-11-10T14:49:13Z")

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I didnt, but i do now and it looks like its working now!!!

Thanks so much