How to make an "inverted" chart?

Question

Zabbix

Salute comrades!
I rummaged through the entire Internet, and, unfortunately, I can’t formulate the question correctly: how to make a graph, for example, of network traffic, so that there is zero in the middle, incoming traffic is drawn up, and outgoing traffic is drawn down. I tried to set a multiplier of -1 for outgoing traffic, but it turns out to be a gibberish.
Thank you for your help.

Answer 1

It looks like it doesn't.
Question from 2011
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