Alert for dashboard Trigger condition

I have a dashboard

A chart - red
E chart - blue

I need alert when E < A

but when E < A, there is no alert…

Hi @ikvagas

What do you have in these settings?

now i set to

Alert state if execution error or timeout - was OK
it was mistake i think

and got error

Hi @ikvagas
Like the error message indicates, you must reduce A and E to single values, then do your alert condition / expression on those reduced values.

Perhaps Example 2 in this tutorial will help.