# Exposing particle velocity to blueprint?

**URL:** <https://forums.unrealengine.com/t/exposing-particle-velocity-to-blueprint/311691>\
**Category:** FX\
**Tags:** parameters, unreal-engine, velocity, Blueprint, question\
**Created:** [March 19, 2015, 12:23pm UTC](https://forums.unrealengine.com/t/exposing-particle-velocity-to-blueprint/311691 "2015-03-19T12:23:23Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![anonymous\_user\_cdcd37ae](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_cdcd37ae](https://forums.unrealengine.com/u/anonymous_user_cdcd37ae)\
**Post date:** [March 19, 2015, 12:23pm UTC](https://forums.unrealengine.com/t/exposing-particle-velocity-to-blueprint/311691/1 "2015-03-19T12:23:23Z")

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Hi,

I’m working on a water splash effect that will play when a boat comes crashing down on the sea. I want to effect the velocity and the number of particles based off how far boat has fallen but can’t seem to find where I can expose the velocity as a parameter.

Initial Vel (Seed) has a slot for a parameter name but that doesn’t seem to be the right thing.

Any help would be great!

Thanks.  
D~

 ![34885-screenshot+2015-03-19+12.19.37.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/a/0/2a0cb53ffbf5b40b25b3d47a195fdc7a23c2b7d5.png)

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**Author:** ![anonymous\_user\_cdcd37ae](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_cdcd37ae](https://forums.unrealengine.com/u/anonymous_user_cdcd37ae)\
**Post date:** [March 19, 2015, 1:15pm UTC](https://forums.unrealengine.com/t/exposing-particle-velocity-to-blueprint/311691/2 "2015-03-19T13:15:14Z")

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OK, I think I sort of worked it out.

I had to change the distribution in the Velocity module to: DistributionVectorParticleParameter which allowed me to name the parameter. I then changed the Param Modes to DPM Direct and now I can use a BP to feed in a number directly to the particle effect.

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**Author:** ![anonymous\_user\_a8f2264d1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_a8f2264d1](https://forums.unrealengine.com/u/anonymous_user_a8f2264d1)\
**Post date:** [July 16, 2015, 4:40am UTC](https://forums.unrealengine.com/t/exposing-particle-velocity-to-blueprint/311691/3 "2015-07-16T04:40:52Z")

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Can you post a picture of your working blueprint? I have set my my parameter, but I can’t seem to actually alter the particle effect when I change it.

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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:** [August 15, 2015, 4:24pm UTC](https://forums.unrealengine.com/t/exposing-particle-velocity-to-blueprint/311691/4 "2015-08-15T16:24:24Z")

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Try setting up your instance Param as displayed in this tutorial