# \[Niagara\] Curves mixing colors and names (XYZ / FLU)

**URL:** <https://forums.unrealengine.com/t/niagara-curves-mixing-colors-and-names-xyz-flu/2732486>\
**Category:** Issues and Bug Reporting\
**Tags:** Status-ReadyForQA, fortnite-creative, unreal-editor-for-fortnite, bug-report, fortnite\
**Created:** [June 30, 2026, 11:20am UTC](https://forums.unrealengine.com/t/niagara-curves-mixing-colors-and-names-xyz-flu/2732486 "2026-06-30T11:20:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Klian](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/klian/32/1207571_2.png) [@Klian](https://forums.unrealengine.com/u/Klian)\
**Post date:** [June 30, 2026, 11:20am UTC](https://forums.unrealengine.com/t/niagara-curves-mixing-colors-and-names-xyz-flu/2732486/1 "2026-06-30T11:20:43Z")

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### Summary

Curves in Niagara editor have the old coordinates colors and names mixed up with the new ones.

### Please select what you are reporting on:

Unreal Editor for Fortnite

### What Type of Bug are you experiencing?

UI/Tools

### Steps to Reproduce

Just use a vector3 curve in a niagara emitter (scale color for example)

### Expected Result

Forward - Blue - Blue Curve  
Left - Red - Red Curve  
Up - Green - Green Curve

### Observed Result

X - Blue - Red Curve  
Y - Red - Green Curve  
Z - Green - Blue Curve

### Platform(s)

Windows UEFN

### Island Code

No Code

### Upload an image

 ![Screenshot 2026-06-30 131100.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/5/5/f/55f0ebc124328a0579892590cfd1d90fac998215.png) ![Screenshot 2026-06-30 131640.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/e/e/2ee253262bf30b75429c92f2f3c12b012cbebb22.png)

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<div class="post-metadata">

**Author:** ![Sprintermax](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/sprintermax/32/1037175_2.png) [@Sprintermax](https://forums.unrealengine.com/u/Sprintermax)\
**Post date:** [June 30, 2026, 6:30pm UTC](https://forums.unrealengine.com/t/niagara-curves-mixing-colors-and-names-xyz-flu/2732486/4 "2026-06-30T18:30:33Z")

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Yeah, the “partial” implementation of LUF without properly updating stuff across the entire engine makes everything absurdly bad, needing conversions (sometimes implicit, other times manually), causing unexpected or hidden behaviors and so on.  
This can also be observed on materials, but honestly, I don’t see how the engine could properly do an “auto-port/migration” from XYZ to LUF on these other places 😕 It is a little more than just swapping the names… (Ex. would break some existing math if left unmodified)

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**Author:** ![Bug-Reporter](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/bug-reporter/32/997076_2.png) [@Bug-Reporter](https://forums.unrealengine.com/u/Bug-Reporter)\
**Post date:** [November 5, 2026, 11:00pm UTC](https://forums.unrealengine.com/t/niagara-curves-mixing-colors-and-names-xyz-flu/2732486/6 "2026-11-05T23:00:35Z")

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FORT-1123733’s status has changed to ‘Ready for QA’. A member of the QA department is investigating the issue.