# 3.50~24 Modification ModbusTCP - volatile register for GridSetpoint ... what about mqtt

**URL:** <https://community.victronenergy.com/t/3-50-24-modification-modbustcp-volatile-register-for-gridsetpoint-what-about-mqtt/4816>\
**Category:** Venus OS beta testing\
**Created:** [23 September 2024 15:44 UTC](https://community.victronenergy.com/t/3-50-24-modification-modbustcp-volatile-register-for-gridsetpoint-what-about-mqtt/4816 "2024-09-23T15:44:11Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![hominidae](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/hominidae/32/209_2.png) [@hominidae](https://community.victronenergy.com/u/hominidae)\
**Post date:** [23 September 2024 21:27 UTC](https://community.victronenergy.com/t/3-50-24-modification-modbustcp-volatile-register-for-gridsetpoint-what-about-mqtt/4816/5 "2024-09-23T21:27:47Z")

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> [@mpvader](#):
>
> And when having DESS enabled you can’t do these setpoints yourself.

Uhmmm…well, sort of, see: [Grid-Setpoint at DESS - #17 by hominidae](https://community.victronenergy.com/t/grid-setpoint-at-dess/2215/17)  
I will test with the hub4 topic when I am back from travel…hopefully, setting a positive number will work as well here 😉

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