# How listen or change the tool option , like brush size etc?

**URL:** <https://forums.creativeclouddeveloper.com/t/how-listen-or-change-the-tool-option-like-brush-size-etc/2513>\
**Category:** Photoshop\
**Created:** [February 7, 2021, 2:51pm UTC](https://forums.creativeclouddeveloper.com/t/how-listen-or-change-the-tool-option-like-brush-size-etc/2513 "2021-02-07T14:51:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mixxiu](https://avatars.discourse-cdn.com/v4/letter/m/dc4da7/32.png) [@mixxiu](https://forums.creativeclouddeveloper.com/u/mixxiu)\
**Post date:** [February 7, 2021, 2:51pm UTC](https://forums.creativeclouddeveloper.com/t/how-listen-or-change-the-tool-option-like-brush-size-etc/2513/1 "2021-02-07T14:51:48Z")

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i use alchemist but it can’t listen  
 ![image](https://us1.discourse-cdn.com/flex015/uploads/xdplugins/original/2X/6/66864a1f6ba8628cff9ee1380fb8374b53f627a5.png)

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**Author:** ![Pierre\_G](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.creativeclouddeveloper.com/pierre_g/32/971_2.png) [@Pierre\_G](https://forums.creativeclouddeveloper.com/u/Pierre_G)\
**Post date:** [February 7, 2021, 3:06pm UTC](https://forums.creativeclouddeveloper.com/t/how-listen-or-change-the-tool-option-like-brush-size-etc/2513/2 "2021-02-07T15:06:09Z")

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Hi, make sure you have the Listener button on, and Descriptors, Listener options activated. See screensht below. Brush sized changed.

 ![Screenshot 2021-02-07 at 16.04.17](https://us1.discourse-cdn.com/flex015/uploads/xdplugins/original/2X/a/ab8d8bf0d6a7c5637903fbb788641fe074a2021e.jpeg)

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**Author:** ![AndreasResch](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.creativeclouddeveloper.com/andreasresch/32/1423_2.png) [@AndreasResch](https://forums.creativeclouddeveloper.com/u/AndreasResch)\
**Post date:** [June 24, 2021, 9:33am UTC](https://forums.creativeclouddeveloper.com/t/how-listen-or-change-the-tool-option-like-brush-size-etc/2513/3 "2021-06-24T09:33:03Z")

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I just posted an example for that … check it out. This one specifically sets the minimum opacity, but you can easily set any other variable like brush size etc.

> [@Setting minimum brush opacity](http://forums.creativeclouddeveloper.com/t/setting-minimum-brush-opacity/3104/15):
>
> Thanks for all the help, Simon. Much appreciated.