How can I change values defined in prj.conf during runtime?

[Satge]

I'd love to change variables that are defined in the prj.conf. For example the CONFIG_MQTT_KEEPALIVE. What's the best way to do this?

[Hakon]

Hello,

you can probably change a lot of them by just manipulating the entries of the mqtt_client struct. You probably need to reestablish the mqtt session  for that to work though.