# Select an element problem

**URL:** <https://forum.dynamobim.com/t/select-an-element-problem/9094>\
**Category:** Revit\
**Created:** [January 24, 2017, 8:39am UTC](https://forum.dynamobim.com/t/select-an-element-problem/9094 "2017-01-24T08:39:24Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![MGHREIFEH](https://avatars.discourse-cdn.com/v4/letter/m/96bed5/32.png) [@MGHREIFEH](https://forum.dynamobim.com/u/MGHREIFEH)\
**Post date:** [January 24, 2017, 8:39am UTC](https://forum.dynamobim.com/t/select-an-element-problem/9094/1 "2017-01-24T08:39:24Z")

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Hi again 😃

my issue is when i select a topography using (select model elemet) node it shows an extra parts that i dont want as shown in attached images …

many thanks

 ![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/b/c/bcd30f6e9607569e5f080d38f9fb73b0689b0b6e.JPG)

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**Author:** ![Mostafa\_El\_Ayoubi](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/mostafa_el_ayoubi/32/7815_2.png) [@Mostafa\_El\_Ayoubi](https://forum.dynamobim.com/u/Mostafa_El_Ayoubi)\
**Post date:** [January 24, 2017, 8:47am UTC](https://forum.dynamobim.com/t/select-an-element-problem/9094/2 "2017-01-24T08:47:30Z")

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Hi @MGHREIFEH ,  
I noticed that to a while ago… Super weird… it seems like it’s just an issue with the display of the mesh.  
If you turn the mesh to a polysurface (using springnodes for example …) you’ll see that it’s actually correct.

Maybe @Zach_Kron @Michael_Kirschner can help us understand better

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**Author:** ![MGHREIFEH](https://avatars.discourse-cdn.com/v4/letter/m/96bed5/32.png) [@MGHREIFEH](https://forum.dynamobim.com/u/MGHREIFEH)\
**Post date:** [January 24, 2017, 8:52am UTC](https://forum.dynamobim.com/t/select-an-element-problem/9094/3 "2017-01-24T08:52:15Z")

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@Mostafa_El_Ayoubi thanks for your reply …

yes i am intend to turn this mesh to polysurface …

when i run dynamo with this my PC hangs, i don’t know why (Small project)!!!

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**Author:** ![jostein\_olsen](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jostein_olsen/32/8570_2.png) [@jostein\_olsen](https://forum.dynamobim.com/u/jostein_olsen)\
**Post date:** [January 24, 2017, 9:24am UTC](https://forum.dynamobim.com/t/select-an-element-problem/9094/4 "2017-01-24T09:24:00Z")

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I’ve commented on this in this github issue: [https://github.com/DynamoDS/Dynamo/issues/7233](https://github.com/DynamoDS/Dynamo/issues/7233)

Seems like the devs have come up with something clever to address this issue.

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**Author:** ![MGHREIFEH](https://avatars.discourse-cdn.com/v4/letter/m/96bed5/32.png) [@MGHREIFEH](https://forum.dynamobim.com/u/MGHREIFEH)\
**Post date:** [January 24, 2017, 10:23am UTC](https://forum.dynamobim.com/t/select-an-element-problem/9094/5 "2017-01-24T10:23:07Z")

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@jostein_olsen thanks bro, it was a units issue!