Just make it possible to output either text or value from the network. And add the ability to merge messages instead of exiting on the first true condition. So each condition could use one of three options.
- append next
- newline and append next
- exit
Basically you could design it more like printf instead of existing switch-case design. It'll also allow to solve the problem that is already in FFF, it'll be possible to see that both the iron and plastic are low.