# I imported some meshes from megascans but when i use them in the scene, the collision does not work. Even the preset of "Block All" does not work. but other box/sphere/capsule collision works fine. what am i doing wrong?

**URL:** <https://forums.unrealengine.com/t/i-imported-some-meshes-from-megascans-but-when-i-use-them-in-the-scene-the-collision-does-not-work-even-the-preset-of-block-all-does-not-work-but-other-box-sphere-capsule-collision-works-fine-what-am-i-doing-wrong/476801>\
**Category:** World Creation\
**Tags:** sphere-collision, unreal-engine, Physics, Collision, question\
**Created:** [January 5, 2021, 8:54am UTC](https://forums.unrealengine.com/t/i-imported-some-meshes-from-megascans-but-when-i-use-them-in-the-scene-the-collision-does-not-work-even-the-preset-of-block-all-does-not-work-but-other-box-sphere-capsule-collision-works-fine-what-am-i-doing-wrong/476801 "2021-01-05T08:54:17Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Bukhari009pppk](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Bukhari009pppk](https://forums.unrealengine.com/u/Bukhari009pppk)\
**Post date:** [January 5, 2021, 8:54am UTC](https://forums.unrealengine.com/t/i-imported-some-meshes-from-megascans-but-when-i-use-them-in-the-scene-the-collision-does-not-work-even-the-preset-of-block-all-does-not-work-but-other-box-sphere-capsule-collision-works-fine-what-am-i-doing-wrong/476801/1 "2021-01-05T08:54:17Z")

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Please help

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**Author:** ![ClockworkOcean](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/clockworkocean/32/1169999_2.png) [@ClockworkOcean](https://forums.unrealengine.com/u/ClockworkOcean)\
**Post date:** [January 5, 2021, 10:37am UTC](https://forums.unrealengine.com/t/i-imported-some-meshes-from-megascans-but-when-i-use-them-in-the-scene-the-collision-does-not-work-even-the-preset-of-block-all-does-not-work-but-other-box-sphere-capsule-collision-works-fine-what-am-i-doing-wrong/476801/2 "2021-01-05T10:37:53Z")

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If you look at the in the static mesh editor, you’ll see they have no collision defined

![326329-screenshot-1.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/f/8/3/f832cedab5ebfdb96a17a546f8bd9a609f5ba9f4.jpeg)

You either need to setup a basic collision

![326330-screenshot-2.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/0/d/70dee2f792f65c3e1db43ea2a3bfb101c4649dcb.jpeg)

or change the default to ‘complex as simple’ which uses the geo to make the collision

 ![326341-screenshot-3.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/c/a/e/caee121b8f48e65e6caa357b8a7a094fdeb12643.jpeg)

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**Author:** ![Bukhari009pppk](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Bukhari009pppk](https://forums.unrealengine.com/u/Bukhari009pppk)\
**Post date:** [January 5, 2021, 2:06pm UTC](https://forums.unrealengine.com/t/i-imported-some-meshes-from-megascans-but-when-i-use-them-in-the-scene-the-collision-does-not-work-even-the-preset-of-block-all-does-not-work-but-other-box-sphere-capsule-collision-works-fine-what-am-i-doing-wrong/476801/3 "2021-01-05T14:06:09Z")

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you are a life-saver. thanks.

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**Author:** ![Franz\_Guo](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Franz\_Guo](https://forums.unrealengine.com/u/Franz_Guo)\
**Post date:** [July 3, 2023, 7:56am UTC](https://forums.unrealengine.com/t/i-imported-some-meshes-from-megascans-but-when-i-use-them-in-the-scene-the-collision-does-not-work-even-the-preset-of-block-all-does-not-work-but-other-box-sphere-capsule-collision-works-fine-what-am-i-doing-wrong/476801/4 "2023-07-03T07:56:06Z")

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Thanks , you helped me too~