# parameterMap.update(deviceId, type, parameterNumber, midiValue)?

**URL:** <https://forum.electra.one/t/parametermap-update-deviceid-type-parameternumber-midivalue/4333>\
**Category:** Developers\
**Created:** [March 20, 2026, 1:24pm UTC](https://forum.electra.one/t/parametermap-update-deviceid-type-parameternumber-midivalue/4333 "2026-03-20T13:24:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kiwigrass](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.electra.one/kiwigrass/32/4983_2.png) [@kiwigrass](https://forum.electra.one/u/kiwigrass)\
**Post date:** [March 20, 2026, 1:24pm UTC](https://forum.electra.one/t/parametermap-update-deviceid-type-parameternumber-midivalue/4333/1 "2026-03-20T13:24:20Z")

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@martin I noticed this when doing some lua editing - the autofill feature popped up with it. Is it an actual function? If so, what does it do? I don’t see it in the documentation. Thanks. I’m looking for a way to do something like parameterMap.apply(), but without the applied increment having to be a positive integer - ie, nudge the value up or down.

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**Author:** ![HDV](https://avatars.discourse-cdn.com/v4/letter/h/f6c823/32.png) [@HDV](https://forum.electra.one/u/HDV)\
**Post date:** [March 21, 2026, 8:55am UTC](https://forum.electra.one/t/parametermap-update-deviceid-type-parameternumber-midivalue/4333/2 "2026-03-21T08:55:23Z")

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Look at [Set message value without sending midi - #9 by martin](https://forum.electra.one/t/set-message-value-without-sending-midi/3595/9)