# Not able change particle parameters using blue prints

**URL:** <https://forums.unrealengine.com/t/not-able-change-particle-parameters-using-blue-prints/385898>\
**Category:** FX\
**Tags:** particle-systems, unreal-engine, Blueprint, question\
**Created:** [February 23, 2017, 5:32am UTC](https://forums.unrealengine.com/t/not-able-change-particle-parameters-using-blue-prints/385898 "2017-02-23T05:32:07Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![anonymous\_user\_b9cf4d5f1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9cf4d5f1](https://forums.unrealengine.com/u/anonymous_user_b9cf4d5f1)\
**Post date:** [February 23, 2017, 5:32am UTC](https://forums.unrealengine.com/t/not-able-change-particle-parameters-using-blue-prints/385898/1 "2017-02-23T05:32:07Z")

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Hi,  
I could able to control material instance parameters dynamically using blueprints for a particle effect but not able to control particle parameters from cascade using blueprints.  
For example I have created a fire in cascade, I wanted to control its rate, velocity, lifespan etc., through blueprints dynamically, I have changed the Distribution Type to Particle Parameter and given a Parameter name “Fire Rate”. I manged to get the parameter name in blueprint details section but if I change the value nothing changes in the view port. I feel I haven’t connected or choose proper nodes in blueprints… Please help… I want to build a fx asset so that it will be easy to change control values just using blueprint instead of opening cascade or material instance.  
Please Help…

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**Author:** ![DigitalMage](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@DigitalMage](https://forums.unrealengine.com/u/DigitalMage)\
**Post date:** [February 23, 2017, 6:38am UTC](https://forums.unrealengine.com/t/not-able-change-particle-parameters-using-blue-prints/385898/2 "2017-02-23T06:38:35Z")

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did you follow this tutorial?

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<div class="post-metadata">

**Author:** ![anonymous\_user\_b9cf4d5f1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9cf4d5f1](https://forums.unrealengine.com/u/anonymous_user_b9cf4d5f1)\
**Post date:** [February 23, 2017, 8:23am UTC](https://forums.unrealengine.com/t/not-able-change-particle-parameters-using-blue-prints/385898/3 "2017-02-23T08:23:03Z")

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Ya, followed that tutorial but I was able to get instance parameters for emitter from cascade modules like rate, velocity etc. I can directly manipulate the properties of emitter in the level itself by adding them in details like same as in tutorial… but controlling emitter parameters via blueprint is what I am not getting… or is there any way I can add material instance parameters to emitter itself so that I no need to create a blueprint.

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**Author:** ![Aphexx100](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Aphexx100](https://forums.unrealengine.com/u/Aphexx100)\
**Post date:** [February 23, 2017, 1:08pm UTC](https://forums.unrealengine.com/t/not-able-change-particle-parameters-using-blue-prints/385898/4 "2017-02-23T13:08:08Z")

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can you please post your blueprint approach?

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<div class="post-metadata">

**Author:** ![Aphexx100](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Aphexx100](https://forums.unrealengine.com/u/Aphexx100)\
**Post date:** [February 23, 2017, 1:17pm UTC](https://forums.unrealengine.com/t/not-able-change-particle-parameters-using-blue-prints/385898/5 "2017-02-23T13:17:53Z")

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for my wind system i use particle parameters.  
first you have to collect your particles and store them. i do it like this at begin play:

 ![127451-collectparticles.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/d/6/7d6a2ae723430c0ecb6fea53ad78069d647b3450.jpeg)

then i set a particle parameter inside the emitter module via tick

 ![127454-setparameter.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/e/8/3e868026ea63552b12a521405ecbc44b8bf6b1cb.jpeg)

the emitter itself looks like this…this should work

 ![127455-emitter.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/2/f/82ff024b1b476bd24a5ae1bca236ac1d83401ba2.jpeg)