# Get Outside Perimeter of Surface (Polycurve.ByJoinedCurves) null

**URL:** https://forum.dynamobim.com/t/get-outside-perimeter-of-surface-polycurve-byjoinedcurves-null/55448
**Category:** Uncategorized
**Created:** [September 23, 2020, 11:59am UTC](https://forum.dynamobim.com/t/get-outside-perimeter-of-surface-polycurve-byjoinedcurves-null/55448 "2020-09-23T11:59:52Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![ZJRODGERS](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/zjrodgers/32/99929_2.png) [@ZJRODGERS](https://forum.dynamobim.com/u/ZJRODGERS)
#### Post date: [September 23, 2020, 11:59am UTC](https://forum.dynamobim.com/t/get-outside-perimeter-of-surface-polycurve-byjoinedcurves-null/55448/1 "2020-09-23T11:59:52Z")

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Hey Everyone, I saw one thread on this already but no answer.

I have a list of surfaces and some of them have holes in them. I want to get just the outside perimeter of all of these surfaces and exclude the holes that way i can create a polycurve from it.

Please let me know if you have any ideas.

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/2/5/25e4bb33064ddee53eacb96b842b9a00076ac3c1.png)

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<div class="post-metadata">

### Author: ![ZJRODGERS](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/zjrodgers/32/99929_2.png) [@ZJRODGERS](https://forum.dynamobim.com/u/ZJRODGERS)
#### Post date: [September 23, 2020, 12:28pm UTC](https://forum.dynamobim.com/t/get-outside-perimeter-of-surface-polycurve-byjoinedcurves-null/55448/2 "2020-09-23T12:28:55Z")

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I figured it out!

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/b/c/bcbdef4511157bcd1942b06f0c293a828a4641ce.png)