How to code this expression , Using tags from plc

[lrose]

@Leor_Fishman

how hefty are these threads?

They are standard threads.

Tag Value Change Scripts: Are They Run Asynchronously?

Yes, there’s also a thread pool of size 3 that is shared between all tag event executions. This really only matters in the case you have a lot of slow to execute scripts, as @pturmel mentioned. Sometimes it’s okay to increase this pool size, but more often it means you’ve done something wrong and should rethink your approach.