# Custom Variables to define MIX and MTRX
**URL:** https://discourse.checkcheckonetwo.com/t/custom-variables-to-define-mix-and-mtrx/3489
**Category:** Yamaha RCP Module
**Created:** [February 27, 2023, 11:30pm UTC](https://discourse.checkcheckonetwo.com/t/custom-variables-to-define-mix-and-mtrx/3489 "2023-02-27T23:30:51Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Ade](https://discourse.checkcheckonetwo.com/u/Ade)
#### Post date: [February 27, 2023, 11:30pm UTC](https://discourse.checkcheckonetwo.com/t/custom-variables-to-define-mix-and-mtrx/3489/1 "2023-02-27T23:30:51Z")
I’m doing some programming with 3.0.2 but I don’t have a QL in front of me. It looks like you can now define MIX and MTRX with variables, is that correct?
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### Author:  [@Andy](https://discourse.checkcheckonetwo.com/u/Andy)
#### Post date: [February 28, 2023, 2:46am UTC](https://discourse.checkcheckonetwo.com/t/custom-variables-to-define-mix-and-mtrx/3489/2 "2023-02-28T02:46:42Z")
Yup! It’s pretty cool.
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### Author:  [@Ade](https://discourse.checkcheckonetwo.com/u/Ade)
#### Post date: [February 28, 2023, 2:34pm UTC](https://discourse.checkcheckonetwo.com/t/custom-variables-to-define-mix-and-mtrx/3489/3 "2023-02-28T14:34:40Z")
Excellent 👍
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### Author:  [@Andy](https://discourse.checkcheckonetwo.com/u/Andy)
#### Post date: [February 28, 2023, 3:05pm UTC](https://discourse.checkcheckonetwo.com/t/custom-variables-to-define-mix-and-mtrx/3489/4 "2023-02-28T15:05:11Z")
The demo page is an example of how they can be used.
[https://discourse.checkcheckonetwo.com/t/v3-rcp-module-installation-instructions/3458/3](https://discourse.checkcheckonetwo.com/t/v3-rcp-module-installation-instructions/3458/3)