# Particle Control over Time Questions

**URL:** <https://forums.unrealengine.com/t/particle-control-over-time-questions/293030>\
**Category:** Rendering\
**Tags:** unreal-engine, question\
**Created:** [September 6, 2014, 8:39am UTC](https://forums.unrealengine.com/t/particle-control-over-time-questions/293030 "2014-09-06T08:39:41Z")\
**Posts on this page:** 1\
**Showing post:** 6

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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:** [September 6, 2014, 11:56pm UTC](https://forums.unrealengine.com/t/particle-control-over-time-questions/293030/6 "2014-09-06T23:56:01Z")

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I think what you want to use is the SpawnTimeOnly check box in the Dynamic Parameter attrib. This allows you to specify a range of value settings @ particle spawn time.

You can create a similar scenario using particle color, and a uniformDistribution set to use extermes to drive a material parameter with a color channel.

I hope that helps, hit me on Twitter if you need more info.

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