Where to store text strings with trigger function

Hello,

I need to store text messages, like home status. It is 1-10k symbols. I use node red and would like store them in globals. But the main negative thing, that i see is that i can not use them as trigger when they changes.
As i know text input entity is limited to 256 or about symbols.
So how can i store it with ability to use them like triggers?

Thanks a lot!