# (Niagra)When I add a scale sprite size I can't see the particle anymore. (Niagra) **URL:** \ **Category:** FX\ **Tags:** size, unreal-engine, question\ **Created:** [February 16, 2021, 9:56am UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866 "2021-02-16T09:56:56Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![noctemee](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@noctemee](https://forums.unrealengine.com/u/noctemee)\ **Post date:** [February 16, 2021, 9:56am UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866/1 "2021-02-16T09:56:56Z")
Hi everyone 🙂 I’m new to Niagra and I try to learn how it works. So my problem is when i add a node to scale particule (scale mesh size or sprite size ) i can’t see them anymore. But the particle count says that they are particles in the viewport. Thank you for your answer 🙂 ---
**Author:** ![LyubomirIko](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@LyubomirIko](https://forums.unrealengine.com/u/LyubomirIko)\ **Post date:** [February 16, 2021, 6:35pm UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866/2 "2021-02-16T18:35:06Z")
In the Niagara System: 1. “Initialize Particle” → Mesh Attributes → Mesh Scale Mode 2. Set “Mesh Scale Mode” to Uniform. I think this will help you! ---
**Author:** ![noctemee](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@noctemee](https://forums.unrealengine.com/u/noctemee)\ **Post date:** [February 17, 2021, 8:51am UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866/3 "2021-02-17T08:51:56Z")
Hi thanks for the answer 🙂 I will try it ---
**Author:** ![noctemee](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@noctemee](https://forums.unrealengine.com/u/noctemee)\ **Post date:** [February 17, 2021, 9:00am UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866/4 "2021-02-17T09:00:21Z")
Thank you very much it work 🙂 ---
**Author:** ![Owloveztazy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Owloveztazy](https://forums.unrealengine.com/u/Owloveztazy)\ **Post date:** [May 4, 2023, 1:53am UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866/6 "2023-05-04T01:53:54Z")
Hi, is there any other solution, it didn’t work. I use ue 5.1.1 ---
**Author:** ![Eldflaufg](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/eldflaufg/32/1177538_2.png) [@Eldflaufg](https://forums.unrealengine.com/u/Eldflaufg)\ **Post date:** [May 11, 2023, 10:44am UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866/8 "2023-05-11T10:44:31Z")
thank you, this worked for me ---
**Author:** ![davek](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@davek](https://forums.unrealengine.com/u/davek)\ **Post date:** [June 19, 2023, 8:46am UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866/9 "2023-06-19T08:46:19Z")
Had the same issue. SOLUTION: Make sure the Scale Sprite Size component is at the correct stack position in the overview - inside the Particle Update section. ---
**Author:** ![SkapiZ](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@SkapiZ](https://forums.unrealengine.com/u/SkapiZ)\ **Post date:** [July 17, 2023, 2:50pm UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866/10 "2023-07-17T14:50:19Z")
Hey ! Make sure before adding a “scale sprite size” or a “scale mesh size” in the particle update to add a value in the " Initialize particle " (The reason is you can’t scale a unknow value) ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/3/3/333e59abb92cce7b626449d3b3246e4cf0660110.jpeg) ---
**Author:** ![fererelx96](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@fererelx96](https://forums.unrealengine.com/u/fererelx96)\ **Post date:** [February 1, 2024, 9:10pm UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866/11 "2024-02-01T21:10:41Z")
For me that I also use 5.1.1. I was able to solve it by just changing the mode in “Initialize Particle” → Sprite Attributes → Sprite Scale Mode → Set “Sprite Scale Mode” to Uniform and with that I can visualize the particles again. And it makes sense to me since I would be using the [Scale “Sprite” size] and not the [Scale “Mesh” size]. ---
**Author:** ![animator7310](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@animator7310](https://forums.unrealengine.com/u/animator7310)\ **Post date:** [February 12, 2024, 8:33am UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866/12 "2024-02-12T08:33:05Z")
Solve It.Thanks al lot… 🙏 🙏 🙏 🙏 🙏 🙏 ---
**Author:** ![naya79](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@naya79](https://forums.unrealengine.com/u/naya79)\ **Post date:** [March 5, 2024, 3:05am UTC](https://forums.unrealengine.com/t/niagra-when-i-add-a-scale-sprite-size-i-cant-see-the-particle-anymore-niagra/478866/13 "2024-03-05T03:05:35Z")
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