Hi,
I'm using a subscription to add real-time updates to my ad-hoc data source.
When I get a new parameterChangeEventMessage, I'm able to get the new value and the parameter it's coming from.
However, to be able to process the change, I would need to know what the old value was.
Is there a way to get the previous value from the event message?
Ive Herreman [SLC] [DevOps Enabler] Selected answer as best 6th March 2025
Hi,
That info is not present in the event message. The value will have to be kept by the receiving side every time when a parameterChangeEventMessage enters to be able to know what the old value was.
When subscribing, the choice can be made whether to receive the initial/current value or only when the value changes after the subscription (skip initial event).
Regards,
Ive Herreman [SLC] [DevOps Enabler] Selected answer as best 6th March 2025