# How do I dynamically change particle Beam width or size via Blueprint?

**URL:** <https://forums.unrealengine.com/t/how-do-i-dynamically-change-particle-beam-width-or-size-via-blueprint/317240>\
**Category:** Blueprint\
**Tags:** beam, unreal-engine, Blueprint, question\
**Created:** [May 2, 2015, 6:19pm UTC](https://forums.unrealengine.com/t/how-do-i-dynamically-change-particle-beam-width-or-size-via-blueprint/317240 "2015-05-02T18:19:28Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![\_EPIC\_homeRye](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@\_EPIC\_homeRye](https://forums.unrealengine.com/u/_EPIC_homeRye)\
**Post date:** [June 5, 2015, 1:51am UTC](https://forums.unrealengine.com/t/how-do-i-dynamically-change-particle-beam-width-or-size-via-blueprint/317240/2 "2015-06-05T01:51:38Z")

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You can use a SizeByLife with your distribution set to an instanceParameter and Scalar parameter in Blueprint.

You can learn more about instance parameters here…

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