# How radial damage only affect specific depths

**URL:** <https://forums.unrealengine.com/t/how-radial-damage-only-affect-specific-depths/395123>\
**Category:** Blueprint\
**Tags:** radial-damage, depth, unreal-engine, UE4, Blueprint, question\
**Created:** [May 31, 2017, 7:32am UTC](https://forums.unrealengine.com/t/how-radial-damage-only-affect-specific-depths/395123 "2017-05-31T07:32:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kafl](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@kafl](https://forums.unrealengine.com/u/kafl)\
**Post date:** [May 31, 2017, 7:32am UTC](https://forums.unrealengine.com/t/how-radial-damage-only-affect-specific-depths/395123/1 "2017-05-31T07:32:16Z")

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I have a wall - that i want to hit and then i need chunk to fall off - and that chunk should only break when they hit the ground.

I saw very little info on this on the internet.

I have setup Nvidia Physx lab DM mesh - with 4 depths - and now i just need to break loose chunks from the first 3 depths - and then the 4. depth should only break when hitting the ground. (the goal is that i need some particle effect to emit only when each chunk hits the ground.)

So i think i need to figure out how to make a radial damage force or similar - only affect specific depth?

Any suggestions are very welcome 🙂

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**Author:** ![kafl](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@kafl](https://forums.unrealengine.com/u/kafl)\
**Post date:** [June 7, 2017, 3:24pm UTC](https://forums.unrealengine.com/t/how-radial-damage-only-affect-specific-depths/395123/2 "2017-06-07T15:24:19Z")

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anyone have any ideas ? 🙂 i could really use any suggestions.

Hoping very much for any answer