Get old the old value of an item

Hi,

maby my question is very nooby …
How could get I the old value of an item.
So maybe I can compare the old with the new value of an item in rules.
For persistence I use RRD

br
portboy

In your rule you can access historical data using any of the methods documented here.. See the Persistence Extensions in Scripts and Rules section.

1 Like

That’s what I was looking for.
THX