# Can Deadband for tag be exported to MQTT?

**URL:** <https://forum.inductiveautomation.com/t/can-deadband-for-tag-be-exported-to-mqtt/77943>\
**Category:** Ignition\
**Tags:** ignition81, perspective, scripting\
**Created:** [August 16, 2023, 3:39pm UTC](https://forum.inductiveautomation.com/t/can-deadband-for-tag-be-exported-to-mqtt/77943 "2023-08-16T15:39:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ian.sebryk](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ian.sebryk/32/49319_2.png) [@ian.sebryk](https://forum.inductiveautomation.com/u/ian.sebryk)\
**Post date:** [August 16, 2023, 3:39pm UTC](https://forum.inductiveautomation.com/t/can-deadband-for-tag-be-exported-to-mqtt/77943/1 "2023-08-16T15:39:47Z")

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we have a sensor tag that we can read/set `value` for via MQTT. we also want to change/set the `Deadband` for that tag. here's a snapshot of what i'm looking at:  
 ![Screenshot 2023-08-16 093704](https://us1.discourse-cdn.com/inductiveautomation/original/3X/3/8/38e827467d383aab7aa2875ae36032e5886508ed.png)

(and, yes, i know `value` is set to `String` instead of `Float`; i'm working on that. the Protobuf setup is a little bit borked)

EDIT: it's been a few days. nobody know the answer to this? as i've been experimenting, i am assuming that Ignition actually populates most of these values instead of the NBIRTH message because i do not have most of those values in my proto configuration. i'm not terribly worried about them, but the `Deadband` is a must for this set of projects. i was just hoping someone from the community would have these answers.

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**Author:** ![Bryson\_Prince](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bryson_prince/32/48866_2.png) [@Bryson\_Prince](https://forum.inductiveautomation.com/u/Bryson_Prince)\
**Post date:** [September 1, 2023, 10:54pm UTC](https://forum.inductiveautomation.com/t/can-deadband-for-tag-be-exported-to-mqtt/77943/2 "2023-09-01T22:54:43Z")

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Hi Ian,

I have not used Protobuf, so I am not sure of the requirements there, but I think this may be possible if you were to use UDTs and have a setpoint tag for the deadband. You could base the deadband value based off of the setpoint tag, and update the setpoint tag value, rather than trying to write to the deadband directly.