MQTT or dbus-send to force battery dumping to the grid

Good afternoon: In which section would I need to ask if I were satisfied with knowing the commands to send (it could be in MQTT or dbus-send) to force the export from the battery to the network at a time of my choice. I have Venus OS Large 3.66 and ssh access.

I use node red in OS large, just change the grid setpoint

You are modifying. So modifications.

I have moved this question there.