# Issue with creating a pipe line

**URL:** <https://forum.dynamobim.com/t/issue-with-creating-a-pipe-line/51281>\
**Category:** Revit\
**Created:** [June 1, 2020, 4:50pm UTC](https://forum.dynamobim.com/t/issue-with-creating-a-pipe-line/51281 "2020-06-01T16:50:10Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![khaoulaouriga](https://avatars.discourse-cdn.com/v4/letter/k/77aa72/32.png) [@khaoulaouriga](https://forum.dynamobim.com/u/khaoulaouriga)\
**Post date:** [June 1, 2020, 4:50pm UTC](https://forum.dynamobim.com/t/issue-with-creating-a-pipe-line/51281/1 "2020-06-01T16:50:10Z")

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hello everyone, does any one know how to creat a pipe line in dynamo (the version with revit 2021 ) because i can’t find the node pipe.bylines

 ![Capture](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/3/9/39e011e8ad9e93e959a6ef9084ac3d72e9e62bcb.png)

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**Author:** ![Alban\_de\_Chasteigner](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/alban_de_chasteigner/32/39650_2.png) [@Alban\_de\_Chasteigner](https://forum.dynamobim.com/u/Alban_de_Chasteigner)\
**Post date:** [June 1, 2020, 4:56pm UTC](https://forum.dynamobim.com/t/issue-with-creating-a-pipe-line/51281/2 "2020-06-01T16:56:06Z")

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Hi @khaoulaouriga,

The _Pipe.ByLines_ node comes from the great MEPover package.  
Use the Package Manager to install it.

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<div class="post-metadata">

**Author:** ![khaoulaouriga](https://avatars.discourse-cdn.com/v4/letter/k/77aa72/32.png) [@khaoulaouriga](https://forum.dynamobim.com/u/khaoulaouriga)\
**Post date:** [June 1, 2020, 5:17pm UTC](https://forum.dynamobim.com/t/issue-with-creating-a-pipe-line/51281/3 "2020-06-01T17:17:30Z")

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thank you @Alban_de_Chasteigner

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**Author:** ![nuria.estivillmanzan](https://avatars.discourse-cdn.com/v4/letter/n/f1d935/32.png) [@nuria.estivillmanzan](https://forum.dynamobim.com/u/nuria.estivillmanzan)\
**Post date:** [July 9, 2020, 3:42pm UTC](https://forum.dynamobim.com/t/issue-with-creating-a-pipe-line/51281/4 "2020-07-09T15:42:14Z")

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Hi guys,  
I am getting a null result using the Pipe.Bylines node. Could anyone help me with that?  
[Capture|690x359](https://forum.dynamobim.com/uploads/short-url/6kDLVij8RtkcQYm7g9z1hMJmNCH.jpeg)

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**Author:** ![Robert\_Younger](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/robert_younger/32/205603_2.png) [@Robert\_Younger](https://forum.dynamobim.com/u/Robert_Younger)\
**Post date:** [July 9, 2020, 4:02pm UTC](https://forum.dynamobim.com/t/issue-with-creating-a-pipe-line/51281/5 "2020-07-09T16:02:56Z")

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It looks like you are feeding a Pipe Element instead of a PipeType. Try changing the Element Type node input to PipeType.

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**Author:** ![nuria.estivillmanzan](https://avatars.discourse-cdn.com/v4/letter/n/f1d935/32.png) [@nuria.estivillmanzan](https://forum.dynamobim.com/u/nuria.estivillmanzan)\
**Post date:** [July 9, 2020, 4:16pm UTC](https://forum.dynamobim.com/t/issue-with-creating-a-pipe-line/51281/6 "2020-07-09T16:16:06Z")

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It worked, many thnaks!

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**Author:** ![jminerrevit](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@jminerrevit](https://forum.dynamobim.com/u/jminerrevit)\
**Post date:** [July 28, 2020, 6:17pm UTC](https://forum.dynamobim.com/t/issue-with-creating-a-pipe-line/51281/7 "2020-07-28T18:17:39Z")

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I’m getting an error with the CurveElement.

Warning: ElementQueries.OfElementType operation failed.  
The input type is not a subclass of Element.  
Parameter name: type