# Feature Request: Midi Mapping

**URL:** <https://forum.boinx.com/t/feature-request-midi-mapping/14901>\
**Category:** mimoLive\
**Created:** [October 8, 2019, 9:29pm UTC](https://forum.boinx.com/t/feature-request-midi-mapping/14901 "2019-10-08T21:29:07Z")\
**Posts on this page:** 1\
**Showing post:** 27

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**Author:** ![JoPhi](https://forum.boinx.com/user_avatar/forum.boinx.com/jophi/32/770_2.png) [@JoPhi](https://forum.boinx.com/u/JoPhi)\
**Post date:** [April 1, 2021, 6:30pm UTC](https://forum.boinx.com/t/feature-request-midi-mapping/14901/27 "2021-04-01T18:30:41Z")

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Here you are:

> [@Any way to change the audio volume of various layers by using layer sets or automation?](https://forum.boinx.com/t/any-way-to-change-the-audio-volume-of-various-layers-by-using-layer-sets-or-automation/16692/2):
>
> Yes, with automation. If you have one and the same audio in several layers, I’d suggest to change the gain of the source(s) by a script. Call a request something like this in your script, for each source: httpRequest(http://localhost:8989 ENDPOINT ?update=...) (Without spaces!) To get the endpoint, right-click the source and add “copy Source’s API Endpoint to clipboard”. e.g.: for sources: httpRequest(http://localhost:8989–API-ENDPOINT–?update={“gain”:2.0}) // 200% volume httpRequest(http…

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