# FX Challenge

**URL:** <https://vistaforum.chroma-q.com/t/fx-challenge/1132>\
**Category:** Vista 3 Releases\
**Created:** [November 24, 2019, 6:38pm UTC](https://vistaforum.chroma-q.com/t/fx-challenge/1132 "2019-11-24T18:38:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![lightman](https://avatars.discourse-cdn.com/v4/letter/l/ed8c4c/32.png) [@lightman](https://vistaforum.chroma-q.com/u/lightman)\
**Post date:** [November 24, 2019, 6:38pm UTC](https://vistaforum.chroma-q.com/t/fx-challenge/1132/1 "2019-11-24T18:38:50Z")

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I have a LED Matrix fixture that has 114 channels. Intensity is on channel 1. LED colors are listed RGBW each on a channel. When i apply an intensity FX to the fixture all channels rise and fall. so the matrix correctly scrolls up and down as i desire them to. However, The intensity channel is doing the same so every 20 beats the overall fixture intensity is rising and falling. I need a way to build a intensity FX where the fixture intensity stays at full.  
Channel 1 - intensity  
Channel 2 - Red  
Channel 3 - Green  
Channel 4 - Blue  
Channel 5 - White  
Channel 6 - Red  
Channel 7 - Green  
and so on.

Any thoughts?

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**Author:** ![Guntars\_Berzins](https://sea2.discourse-cdn.com/flex016/user_avatar/vistaforum.chroma-q.com/guntars_berzins/32/187_2.png) [@Guntars\_Berzins](https://vistaforum.chroma-q.com/u/Guntars_Berzins)\
**Post date:** [November 25, 2019, 7:47pm UTC](https://vistaforum.chroma-q.com/t/fx-challenge/1132/2 "2019-11-25T19:47:10Z")

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Can you share the fixture name (if in library) or fixture profile u are using? Just checked with custom led matrix 3x3 + global dimmer and it works as you expect.  
Maybe try to select pixels individually and see what happens - does it still behave the same?

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**Author:** ![Robert\_Price](https://sea2.discourse-cdn.com/flex016/user_avatar/vistaforum.chroma-q.com/robert_price/32/621_2.png) [@Robert\_Price](https://vistaforum.chroma-q.com/u/Robert_Price)\
**Post date:** [November 26, 2019, 10:02pm UTC](https://vistaforum.chroma-q.com/t/fx-challenge/1132/3 "2019-11-26T22:02:34Z")

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Patch it as separate RGBW Fixtures and one Generic dimmer as a master,

when you make your FX only select the RGBW elements and leave the Master at full !

Let me know if this works 🙂